From e7eb60a1176c923a2e20ce025e7531a0ccb1ed21 Mon Sep 17 00:00:00 2001
From: Jarda Snajdr <jsnajdr@gmail.com>
Date: Wed, 22 May 2024 13:10:53 +0200
Subject: [PATCH] withRegistryProvider: prevent intermediate state with no
 children (#61859)

Co-authored-by: jsnajdr <jsnajdr@git.wordpress.org>
Co-authored-by: youknowriad <youknowriad@git.wordpress.org>
Co-authored-by: tyxla <tyxla@git.wordpress.org>
Co-authored-by: annezazu <annezazu@git.wordpress.org>
---
 .../provider/with-registry-provider.js        | 71 +++++++++----------
 .../provider/with-registry-provider.js        | 63 ++++++++--------
 2 files changed, 65 insertions(+), 69 deletions(-)

diff --git a/packages/block-editor/src/components/provider/with-registry-provider.js b/packages/block-editor/src/components/provider/with-registry-provider.js
index 5c00da6e93eabc..582a9bd547f20e 100644
--- a/packages/block-editor/src/components/provider/with-registry-provider.js
+++ b/packages/block-editor/src/components/provider/with-registry-provider.js
@@ -1,12 +1,8 @@
 /**
  * WordPress dependencies
  */
-import { useState, useEffect } from '@wordpress/element';
-import {
-	withRegistry,
-	createRegistry,
-	RegistryProvider,
-} from '@wordpress/data';
+import { useState } from '@wordpress/element';
+import { useRegistry, createRegistry, RegistryProvider } from '@wordpress/data';
 import { createHigherOrderComponent } from '@wordpress/compose';
 
 /**
@@ -15,41 +11,40 @@ import { createHigherOrderComponent } from '@wordpress/compose';
 import { storeConfig } from '../../store';
 import { STORE_NAME as blockEditorStoreName } from '../../store/constants';
 
-const withRegistryProvider = createHigherOrderComponent(
-	( WrappedComponent ) => {
-		return withRegistry(
-			( { useSubRegistry = true, registry, ...props } ) => {
-				if ( ! useSubRegistry ) {
-					return (
-						<WrappedComponent registry={ registry } { ...props } />
-					);
-				}
-
-				const [ subRegistry, setSubRegistry ] = useState( null );
-				useEffect( () => {
-					const newRegistry = createRegistry( {}, registry );
-					newRegistry.registerStore(
-						blockEditorStoreName,
-						storeConfig
-					);
-					setSubRegistry( newRegistry );
-				}, [ registry ] );
+function getSubRegistry( subRegistries, registry, useSubRegistry ) {
+	if ( ! useSubRegistry ) {
+		return registry;
+	}
+	let subRegistry = subRegistries.get( registry );
+	if ( ! subRegistry ) {
+		subRegistry = createRegistry( {}, registry );
+		subRegistry.registerStore( blockEditorStoreName, storeConfig );
+		subRegistries.set( registry, subRegistry );
+	}
+	return subRegistry;
+}
 
-				if ( ! subRegistry ) {
-					return null;
-				}
+const withRegistryProvider = createHigherOrderComponent(
+	( WrappedComponent ) =>
+		( { useSubRegistry = true, ...props } ) => {
+			const registry = useRegistry();
+			const [ subRegistries ] = useState( () => new WeakMap() );
+			const subRegistry = getSubRegistry(
+				subRegistries,
+				registry,
+				useSubRegistry
+			);
 
-				return (
-					<RegistryProvider value={ subRegistry }>
-						<WrappedComponent
-							registry={ subRegistry }
-							{ ...props }
-						/>
-					</RegistryProvider>
-				);
+			if ( subRegistry === registry ) {
+				return <WrappedComponent registry={ registry } { ...props } />;
 			}
-		);
-	},
+
+			return (
+				<RegistryProvider value={ subRegistry }>
+					<WrappedComponent registry={ subRegistry } { ...props } />
+				</RegistryProvider>
+			);
+		},
 	'withRegistryProvider'
 );
 
diff --git a/packages/editor/src/components/provider/with-registry-provider.js b/packages/editor/src/components/provider/with-registry-provider.js
index 32c30a9f8d6873..cebbb766ff9429 100644
--- a/packages/editor/src/components/provider/with-registry-provider.js
+++ b/packages/editor/src/components/provider/with-registry-provider.js
@@ -1,12 +1,8 @@
 /**
  * WordPress dependencies
  */
-import { useState, useEffect } from '@wordpress/element';
-import {
-	withRegistry,
-	createRegistry,
-	RegistryProvider,
-} from '@wordpress/data';
+import { useState } from '@wordpress/element';
+import { useRegistry, createRegistry, RegistryProvider } from '@wordpress/data';
 import { createHigherOrderComponent } from '@wordpress/compose';
 import { storeConfig as blockEditorStoreConfig } from '@wordpress/block-editor';
 
@@ -15,41 +11,46 @@ import { storeConfig as blockEditorStoreConfig } from '@wordpress/block-editor';
  */
 import { storeConfig } from '../../store';
 
+function getSubRegistry( subRegistries, registry, useSubRegistry ) {
+	if ( ! useSubRegistry ) {
+		return registry;
+	}
+	let subRegistry = subRegistries.get( registry );
+	if ( ! subRegistry ) {
+		subRegistry = createRegistry(
+			{
+				'core/block-editor': blockEditorStoreConfig,
+			},
+			registry
+		);
+		// Todo: The interface store should also be created per instance.
+		subRegistry.registerStore( 'core/editor', storeConfig );
+		subRegistries.set( registry, subRegistry );
+	}
+	return subRegistry;
+}
+
 const withRegistryProvider = createHigherOrderComponent(
 	( WrappedComponent ) =>
-		withRegistry( ( props ) => {
-			const {
-				useSubRegistry = true,
+		( { useSubRegistry = true, ...props } ) => {
+			const registry = useRegistry();
+			const [ subRegistries ] = useState( () => new WeakMap() );
+			const subRegistry = getSubRegistry(
+				subRegistries,
 				registry,
-				...additionalProps
-			} = props;
-			if ( ! useSubRegistry ) {
-				return <WrappedComponent { ...additionalProps } />;
-			}
-
-			const [ subRegistry, setSubRegistry ] = useState( null );
-			useEffect( () => {
-				const newRegistry = createRegistry(
-					{
-						'core/block-editor': blockEditorStoreConfig,
-					},
-					registry
-				);
-				// Todo: The interface store should also be created per instance.
-				newRegistry.registerStore( 'core/editor', storeConfig );
-				setSubRegistry( newRegistry );
-			}, [ registry ] );
+				useSubRegistry
+			);
 
-			if ( ! subRegistry ) {
-				return null;
+			if ( subRegistry === registry ) {
+				return <WrappedComponent registry={ registry } { ...props } />;
 			}
 
 			return (
 				<RegistryProvider value={ subRegistry }>
-					<WrappedComponent { ...additionalProps } />
+					<WrappedComponent registry={ subRegistry } { ...props } />
 				</RegistryProvider>
 			);
-		} ),
+		},
 	'withRegistryProvider'
 );