feat: support autoExternal for dts files (#80)

e2e/cases/auto-external/default/package.json

@@ -1,6 +1,7 @@
 {
   "name": "auto-external-default-test",
   "dependencies": {
+    "ora": "8.0.1",
     "react": "^18.3.1"
   }
 }

e2e/cases/auto-external/default/rslib.config.ts

@@ -2,10 +2,21 @@ import { generateBundleCjsConfig, generateBundleEsmConfig } from '@e2e/helper';
 import { defineConfig } from '@rslib/core';
 
 export default defineConfig({
-  lib: [generateBundleEsmConfig(__dirname), generateBundleCjsConfig(__dirname)],
+  lib: [
+    generateBundleEsmConfig(__dirname, {
+      dts: {
+        bundle: true,
+      },
+    }),
+    generateBundleCjsConfig(__dirname, {
+      dts: {
+        bundle: true,
+      },
+    }),
+  ],
   source: {
     entry: {
-      main: '../__fixtures__/src/index.ts',
+      main: './src/index.ts',
     },
   },
 });

e2e/cases/auto-external/default/src/index.ts

@@ -0,0 +1,7 @@
+import type { oraPromise } from 'ora';
+import React from 'react';
+
+export type { oraPromise };
+export const foo = () => {
+  return React.version;
+};

e2e/cases/auto-external/default/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "jsx": "react-jsx",
+    "strict": true,
+    "esModuleInterop": true
+  },
+  "include": ["src/**/*"]
+}

e2e/cases/auto-external/false/package.json

@@ -1,6 +1,7 @@
 {
   "name": "auto-external-false-test",
   "dependencies": {
+    "ora": "8.0.1",
     "react": "^18.3.1"
   }
 }

e2e/cases/auto-external/false/rslib.config.ts

@@ -3,18 +3,22 @@ import { defineConfig } from '@rslib/core';
 
 export default defineConfig({
   lib: [
-    {
-      ...generateBundleEsmConfig(__dirname),
+    generateBundleEsmConfig(__dirname, {
       autoExternal: false,
-    },
-    {
-      ...generateBundleCjsConfig(__dirname),
+      dts: {
+        bundle: true,
+      },
+    }),
+    generateBundleCjsConfig(__dirname, {
       autoExternal: false,
-    },
+      dts: {
+        bundle: true,
+      },
+    }),
   ],
   source: {
     entry: {
-      main: '../__fixtures__/src/index.ts',
+      main: './src/index.ts',
     },
   },
 });

e2e/cases/auto-external/false/src/index.ts

@@ -0,0 +1,7 @@
+import type { oraPromise } from 'ora';
+import React from 'react';
+
+export type { oraPromise };
+export const foo = () => {
+  return React.version;
+};

e2e/cases/auto-external/false/tsconfig.json

@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "jsx": "react-jsx",
+    "strict": true,
+    "esModuleInterop": true
+  },
+  "include": ["src/**/*"]
+}

e2e/cases/auto-external/index.test.ts

@@ -4,15 +4,19 @@ import { expect, test } from 'vitest';
 
 test('auto external default should works', async () => {
   const fixturePath = join(__dirname, 'default');
-  const { entries } = await buildAndGetResults(fixturePath);
+  const { js, dts } = await buildAndGetResults(fixturePath, 'all');
 
-  expect(entries.esm).toContain(
+  expect(js.entries.esm).toContain(
     'import * as __WEBPACK_EXTERNAL_MODULE_react__ from "react"',
   );
 
-  expect(entries.cjs).toContain(
+  expect(js!.entries.cjs).toContain(
     'var external_react_namespaceObject = require("react");',
   );
+
+  // dts should externalized
+  expect(dts.entries.esm).toContain("import type { oraPromise } from 'ora';");
+  expect(dts.entries.cjs).toContain("import type { oraPromise } from 'ora';");
 });
 
 test('auto external sub path should works', async () => {
@@ -36,15 +40,20 @@ test('auto external sub path should works', async () => {
 
 test('auto external false should works', async () => {
   const fixturePath = join(__dirname, 'false');
-  const { entries } = await buildAndGetResults(fixturePath);
+  const { js, dts } = await buildAndGetResults(fixturePath, 'all');
 
-  expect(entries.esm).not.toContain(
+  expect(js.entries.esm).not.toContain(
     'import * as __WEBPACK_EXTERNAL_MODULE_react__ from "react"',
   );
 
-  expect(entries.cjs).not.toContain(
+  expect(js.entries.cjs).not.toContain(
     'var external_react_namespaceObject = require("react");',
   );
+
+  // dts should bundled
+  expect(dts.entries.esm).toContain('export declare function oraPromise');
+
+  expect(dts.entries.cjs).toContain('export declare function oraPromise');
 });
 
 test('externals should overrides auto external', async () => {

e2e/scripts/shared.ts

@@ -102,24 +102,61 @@ export async function getResults(
   };
 }
 
-export const buildAndGetResults = async (
-  fixturePath: string,
-  type: 'js' | 'dts' = 'js',
-): Promise<{
+type BuildResult = {
   contents: Record<string, Record<string, string>>;
   files: Record<string, string[]>;
   entries: Record<string, string>;
   entryFiles: Record<string, string>;
   rspackConfig: InspectConfigResult['origin']['bundlerConfigs'];
   rsbuildConfig: InspectConfigResult['origin']['rsbuildConfig'];
   isSuccess: boolean;
-}> => {
+};
+
+export async function buildAndGetResults(
+  fixturePath: string,
+  type: 'all',
+): Promise<{
+  js: BuildResult;
+  dts: BuildResult;
+}>;
+export async function buildAndGetResults(
+  fixturePath: string,
+  type?: 'js' | 'dts',
+): Promise<BuildResult>;
+export async function buildAndGetResults(
+  fixturePath: string,
+  type: 'js' | 'dts' | 'all' = 'js',
+) {
   const rslibConfig = await loadConfig(join(fixturePath, 'rslib.config.ts'));
   process.chdir(fixturePath);
   const rsbuildInstance = await build(rslibConfig);
   const {
     origin: { bundlerConfigs, rsbuildConfig },
   } = await rsbuildInstance.inspectConfig({ verbose: true });
+  if (type === 'all') {
+    const jsResults = await getResults(rslibConfig, fixturePath, 'js');
+    const dtsResults = await getResults(rslibConfig, fixturePath, 'dts');
+    return {
+      js: {
+        contents: jsResults.contents,
+        files: jsResults.files,
+        entries: jsResults.entries,
+        entryFiles: jsResults.entryFiles,
+        rspackConfig: bundlerConfigs,
+        rsbuildConfig: rsbuildConfig,
+        isSuccess: Boolean(rsbuildInstance),
+      },
+      dts: {
+        contents: dtsResults.contents,
+        files: dtsResults.files,
+        entries: dtsResults.entries,
+        entryFiles: dtsResults.entryFiles,
+        rspackConfig: bundlerConfigs,
+        rsbuildConfig: rsbuildConfig,
+        isSuccess: Boolean(rsbuildInstance),
+      },
+    };
+  }
 
   const results = await getResults(rslibConfig, fixturePath, type);
   return {
@@ -131,4 +168,4 @@ export const buildAndGetResults = async (
     rsbuildConfig: rsbuildConfig,
     isSuccess: Boolean(rsbuildInstance),
   };
-};
+}

package.json

@@ -13,8 +13,8 @@
     "test:artifact": "vitest run --project artifact",
     "test:artifact:watch": "vitest --project artifact",
     "test:e2e": "cd e2e && pnpm run test",
-    "test:unit": "vitest run --project unit",
-    "test:unit:watch": "vitest --project unit",
+    "test:unit": "vitest run --project unit*",
+    "test:unit:watch": "vitest --project unit*",
     "watch": "pnpm build --watch"
   },
   "simple-git-hooks": {

packages/core/src/config.ts

@@ -397,7 +397,7 @@ const composeDtsConfig = async (
   libConfig: LibConfig,
   dtsExtension: string,
 ): Promise<RsbuildConfig> => {
-  const { dts, bundle, output } = libConfig;
+  const { dts, bundle, output, autoExternal } = libConfig;
 
   if (dts === false || dts === undefined) return {};
 
@@ -409,6 +409,7 @@ const composeDtsConfig = async (
         distPath: dts?.distPath ?? output?.distPath?.root ?? './dist',
         abortOnError: dts?.abortOnError ?? true,
         dtsExtension,
+        autoExternal,
       }),
     ],
   };

packages/plugin-dts/src/apiExtractor.ts

@@ -16,6 +16,7 @@ export type BundleOptions = {
   dtsExtension: string;
   dtsEntry: DtsEntry;
   tsconfigPath?: string;
+  bundledPackages?: string[];
 };
 
 export async function bundleDts(options: BundleOptions): Promise<void> {
@@ -29,6 +30,7 @@ export async function bundleDts(options: BundleOptions): Promise<void> {
       path: 'index.d.ts',
     },
     tsconfigPath = 'tsconfig.json',
+    bundledPackages = [],
   } = options;
   try {
     const start = Date.now();
@@ -40,8 +42,7 @@ export async function bundleDts(options: BundleOptions): Promise<void> {
     const mainEntryPointFilePath = dtsEntry.path!;
     const internalConfig = {
       mainEntryPointFilePath,
-      // TODO: use !externals
-      // bundledPackages: [],
+      bundledPackages,
       dtsRollup: {
         enabled: true,
         untrimmedFilePath,

packages/plugin-dts/src/dts.ts

@@ -1,3 +1,4 @@
+import fs from 'node:fs';
 import { basename, dirname, join, relative } from 'node:path';
 import { logger } from '@rsbuild/core';
 import color from 'picocolors';
@@ -6,6 +7,95 @@ import * as ts from 'typescript';
 import { emitDts } from './tsc';
 import { ensureTempDeclarationDir, loadTsconfig } from './utils';
 
+const isObject = (obj: unknown): obj is Record<string, any> =>
+  Object.prototype.toString.call(obj) === '[object Object]';
+
+// use !externals
+export const calcBundledPackages = (options: {
+  autoExternal: DtsGenOptions['autoExternal'];
+  cwd: string;
+  userExternals?: DtsGenOptions['userExternals'];
+}): string[] => {
+  const { autoExternal, cwd, userExternals } = options;
+
+  let pkgJson: {
+    dependencies?: Record<string, string>;
+    peerDependencies?: Record<string, string>;
+    devDependencies?: Record<string, string>;
+  };
+
+  try {
+    const content = fs.readFileSync(join(cwd, 'package.json'), 'utf-8');
+    pkgJson = JSON.parse(content);
+  } catch (err) {
+    logger.warn(
+      'The type of third-party packages will not be bundled due to read package.json failed',
+    );
+    return [];
+  }
+
+  const externalOptions = autoExternal
+    ? {
+        dependencies: true,
+        peerDependencies: true,
+        devDependencies: false,
+        ...(autoExternal === true ? {} : autoExternal),
+      }
+    : {
+        dependencies: false,
+        peerDependencies: false,
+        devDependencies: false,
+      };
+
+  // User externals should not bundled
+  // Only handle the case where the externals type is string / (string | RegExp)[] / plain object, function type is too complex.
+  const getUserExternalsKeys = (
+    value: typeof userExternals,
+  ): (string | RegExp)[] => {
+    if (!value) {
+      return [];
+    }
+
+    if (typeof value === 'string' || value instanceof RegExp) {
+      return [value];
+    }
+
+    if (Array.isArray(value)) {
+      return value.flatMap((v) => getUserExternalsKeys(v));
+    }
+
+    if (isObject(userExternals)) {
+      return Object.keys(userExternals);
+    }
+    return [];
+  };
+
+  const externals: (string | RegExp)[] = getUserExternalsKeys(userExternals);
+
+  const allDeps: string[] = [];
+
+  for (const type of [
+    'dependencies',
+    'peerDependencies',
+    'devDependencies',
+  ] as const) {
+    const deps = pkgJson[type] && Object.keys(pkgJson[type]);
+    if (deps) {
+      if (externalOptions[type]) {
+        externals.push(...deps);
+      }
+      allDeps.push(...deps);
+    }
+  }
+
+  const bundledPackages = allDeps.filter(
+    (d) =>
+      !externals.some((e) => (typeof e === 'string' ? d === e : e.test(d))),
+  );
+
+  return Array.from(new Set(bundledPackages));
+};
+
 export async function generateDts(data: DtsGenOptions): Promise<void> {
   const {
     bundle,
@@ -16,6 +106,8 @@ export async function generateDts(data: DtsGenOptions): Promise<void> {
     cwd,
     isWatch,
     dtsExtension = '.d.ts',
+    autoExternal = true,
+    userExternals,
   } = data;
   logger.start(`Generating DTS... ${color.gray(`(${name})`)}`);
   const configPath = ts.findConfigFile(cwd, ts.sys.fileExists, tsconfigPath);
@@ -66,6 +158,11 @@ export async function generateDts(data: DtsGenOptions): Promise<void> {
         },
         tsconfigPath,
         dtsExtension,
+        bundledPackages: calcBundledPackages({
+          autoExternal,
+          cwd,
+          userExternals,
+        }),
       });
     }
   };