feat: use tsconfck

packages/core/package.json

@@ -51,6 +51,7 @@
     "prebundle": "1.2.2",
     "rslib": "npm:@rslib/[email protected]",
     "rslog": "^1.2.3",
+    "tsconfck": "3.1.3",
     "typescript": "^5.5.4"
   },
   "peerDependencies": {

packages/core/src/config.ts

@@ -10,7 +10,6 @@ import {
   rspack,
 } from '@rsbuild/core';
 import glob from 'fast-glob';
-import ts from 'typescript';
 import {
   DEFAULT_CONFIG_NAME,
   DEFAULT_EXTENSIONS,
@@ -41,7 +40,7 @@ import {
 } from './utils/helper';
 import { logger } from './utils/logger';
 import { transformSyntaxToBrowserslist } from './utils/syntax';
-import { getTsconfigCompilerOptions } from './utils/tsconfig';
+import { loadTsconfig } from './utils/tsconfig';
 
 /**
  * This function helps you to autocomplete configuration types.
@@ -363,12 +362,12 @@ export function composeBannerFooterConfig(
 }
 
 export function composeDecoratorsConfig(
-  options: ts.CompilerOptions,
+  compilerOptions?: Record<string, any>,
   version?: NonNullable<
     NonNullable<RsbuildConfig['source']>['decorators']
   >['version'],
 ): RsbuildConfig {
-  if (version || !options.experimentalDecorators) {
+  if (version || !compilerOptions?.experimentalDecorators) {
     return {};
   }
 
@@ -811,15 +810,10 @@ const composeExternalHelpersConfig = (
 async function composeLibRsbuildConfig(config: LibConfig, configPath: string) {
   const rootPath = dirname(configPath);
   const pkgJson = readPackageJson(rootPath);
-  let compilerOptions: ts.CompilerOptions = {};
-  const tsconfigPath = ts.findConfigFile(
+  const { compilerOptions } = await loadTsconfig(
     rootPath,
-    ts.sys.fileExists,
     config.source?.tsconfigPath,
   );
-  if (tsconfigPath) {
-    compilerOptions = getTsconfigCompilerOptions(tsconfigPath);
-  }
 
   const {
     format,

packages/core/src/utils/tsconfig.ts

@@ -1,21 +1,21 @@
-import path from 'node:path';
-import ts from 'typescript';
+import { basename, join } from 'node:path';
+import { find, parse } from 'tsconfck';
 
-export function loadTsconfig(tsconfigPath: string): ts.ParsedCommandLine {
-  const configFile = ts.readConfigFile(tsconfigPath, ts.sys.readFile);
-  const configFileContent = ts.parseJsonConfigFileContent(
-    configFile.config,
-    ts.sys,
-    path.dirname(tsconfigPath),
-  );
+export async function loadTsconfig(
+  root: string,
+  tsconfigPath = 'tsconfig.json',
+): Promise<{
+  compilerOptions?: Record<string, any>;
+}> {
+  const tsconfigFileName = await find(join(root, tsconfigPath), {
+    root,
+    configName: basename(tsconfigPath),
+  });
 
-  return configFileContent;
-}
-
-export function getTsconfigCompilerOptions(
-  tsconfigPath: string,
-): ts.CompilerOptions {
-  const { options } = loadTsconfig(tsconfigPath);
+  if (tsconfigFileName) {
+    const { tsconfig } = await parse(tsconfigFileName);
+    return tsconfig;
+  }
 
-  return options;
+  return {};
 }

packages/core/tests/extension.test.ts

@@ -1,11 +1,18 @@
 import { describe, expect, it, vi } from 'vitest';
+import type { Format, PkgJson } from '../src/types';
 import { getDefaultExtension } from '../src/utils/extension';
 
+type Options = {
+  format: Format;
+  pkgJson?: PkgJson;
+  autoExtension: boolean;
+};
+
 vi.mock('rslog');
 
 describe('should get extension correctly', () => {
   it('autoExtension is false', () => {
-    const options = {
+    const options: Options = {
       format: 'cjs',
       pkgJson: {},
       autoExtension: false,
@@ -20,7 +27,7 @@ describe('should get extension correctly', () => {
   });
 
   it('package.json is broken', () => {
-    const options = {
+    const options: Options = {
       format: 'cjs',
       autoExtension: true,
     };
@@ -34,7 +41,7 @@ describe('should get extension correctly', () => {
   });
 
   it('format is cjs and type is module in package.json', () => {
-    const options = {
+    const options: Options = {
       format: 'cjs',
       pkgJson: {
         type: 'module',
@@ -52,7 +59,7 @@ describe('should get extension correctly', () => {
   });
 
   it('format is cjs and type is commonjs in package.json', () => {
-    const options = {
+    const options: Options = {
       format: 'cjs',
       pkgJson: {
         type: 'commonjs',
@@ -70,7 +77,7 @@ describe('should get extension correctly', () => {
   });
 
   it('format is esm and type is commonjs in package.json', () => {
-    const options = {
+    const options: Options = {
       format: 'esm',
       pkgJson: {
         type: 'commonjs',
@@ -88,7 +95,7 @@ describe('should get extension correctly', () => {
   });
 
   it('format is esm and type is module in package.json', () => {
-    const options = {
+    const options: Options = {
       format: 'esm',
       pkgJson: {
         type: 'module',

packages/core/tests/fixtures/tsconfig/exist/tsconfig.custom.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "rootDir": "custom"
+  }
+}

packages/core/tests/fixtures/tsconfig/exist/tsconfig.json

@@ -0,0 +1,5 @@
+{
+  "compilerOptions": {
+    "rootDir": "./"
+  }
+}

packages/core/tests/fixtures/tsconfig/no-exist/index.js

@@ -0,0 +1 @@
+export const foo = 'foo';

packages/core/tests/tsconfig.test.ts

@@ -0,0 +1,33 @@
+import { join } from 'node:path';
+import { describe, expect, it } from 'vitest';
+import { loadTsconfig } from '../src/utils/tsconfig';
+
+describe('loadTsconfig', () => {
+  it('should return tsconfig when a valid tsconfig file is found', async () => {
+    const fixtureDir = join(__dirname, 'fixtures/tsconfig/exist');
+    const result1 = await loadTsconfig(fixtureDir);
+    const result2 = await loadTsconfig(fixtureDir, './tsconfig.custom.json');
+
+    expect(result1).toMatchInlineSnapshot(`
+      {
+        "compilerOptions": {
+          "rootDir": "./",
+        },
+      }
+    `);
+    expect(result2).toMatchInlineSnapshot(`
+      {
+        "compilerOptions": {
+          "rootDir": "custom",
+        },
+      }
+    `);
+  });
+
+  it('should return an empty object when no tsconfig file is found', async () => {
+    const fixtureDir = join(__dirname, 'fixtures/tsconfig/no-exist');
+    const result = await loadTsconfig(fixtureDir);
+
+    expect(result).toEqual({});
+  });
+});

scripts/dictionary.txt

@@ -118,6 +118,7 @@ templating
 transpiling
 treeshaking
 tsbuildinfo
+tsconfck
 tsdoc
 tsup
 unocss