fix(jest-config): add mts and cts to default moduleFileExtensions config

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ### Features
 
+- `[jest-config]` [**BREAKING**] Add `mts` and `cts` to default `moduleFileExtensions` config ([#14369](https://github.com/facebook/jest/pull/14369))
+
 ### Fixes
 
 ### Chore & Maintenance

docs/Configuration.md

@@ -92,7 +92,7 @@ const {defaults} = require('jest-config');
 
 /** @type {import('jest').Config} */
 const config = {
-  moduleFileExtensions: [...defaults.moduleFileExtensions, 'mts', 'cts'],
+  moduleDirectories: [...defaults.moduleDirectories, 'bower_components'],
 };
 
 module.exports = config;
@@ -103,7 +103,7 @@ import type {Config} from 'jest';
 import {defaults} from 'jest-config';
 
 const config: Config = {
-  moduleFileExtensions: [...defaults.moduleFileExtensions, 'mts'],
+  moduleDirectories: [...defaults.moduleDirectories, 'bower_components'],
 };
 
 export default config;
@@ -930,7 +930,7 @@ export default config;
 
 ### `moduleFileExtensions` \[array<string>]
 
-Default: `["js", "mjs", "cjs", "jsx", "ts", "tsx", "json", "node"]`
+Default: `["js", "mjs", "cjs", "jsx", "ts", "mts", "cts", "tsx", "json", "node"]`
 
 An array of file extensions your modules use. If you require modules without specifying a file extension, these are the extensions Jest will look for, in left-to-right order.
 

e2e/__tests__/__snapshots__/showConfig.test.ts.snap

@@ -40,6 +40,8 @@ exports[`--showConfig outputs config info and exits 1`] = `
         "cjs",
         "jsx",
         "ts",
+        "mts",
+        "cts",
         "tsx",
         "json",
         "node"

e2e/__tests__/__snapshots__/testMatchTs.test.ts.snap

@@ -0,0 +1,9 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`testMatch should able to match file with cts and mts extension 1`] = `
+"Test Suites: 2 passed, 2 total
+Tests:       2 passed, 2 total
+Snapshots:   0 total
+Time:        <<REPLACED>>
+Ran all test suites."
+`;

e2e/__tests__/testMatchTs.test.ts

@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+import {extractSummary} from '../Utils';
+import runJest from '../runJest';
+
+it('testMatch should able to match file with cts and mts extension', () => {
+  const result = runJest('test-match-ts');
+  expect(result.exitCode).toBe(0);
+  const {summary} = extractSummary(result.stderr);
+  expect(summary).toMatchSnapshot();
+});

e2e/test-match-ts/__tests__/sample-suite.mts

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('mts extension', () => {
+  expect(1).toBe(1);
+});

e2e/test-match-ts/__tests__/sample-suite2.cts

@@ -0,0 +1,10 @@
+/**
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+test('cts extension', () => {
+  expect(1).toBe(1);
+});

e2e/test-match-ts/package.json

@@ -0,0 +1,7 @@
+{
+  "jest": {
+    "testMatch": [
+      "**/__tests__/*.?ts"
+    ]
+  }
+}

packages/jest-cli/src/init/__tests__/__snapshots__/init.test.ts.snap

@@ -202,6 +202,8 @@ const config: Config = {
   //   "cjs",
   //   "jsx",
   //   "ts",
+  //   "mts",
+  //   "cts",
   //   "tsx",
   //   "json",
   //   "node"
@@ -404,6 +406,8 @@ const config = {
   //   "cjs",
   //   "jsx",
   //   "ts",
+  //   "mts",
+  //   "cts",
   //   "tsx",
   //   "json",
   //   "node"
@@ -606,6 +610,8 @@ const config = {
   //   "cjs",
   //   "jsx",
   //   "ts",
+  //   "mts",
+  //   "cts",
   //   "tsx",
   //   "json",
   //   "node"

packages/jest-config/src/Defaults.ts

@@ -51,6 +51,8 @@ const defaultOptions: Config.DefaultOptions = {
     'cjs',
     'jsx',
     'ts',
+    'mts',
+    'cts',
     'tsx',
     'json',
     'node',

packages/jest-config/src/ValidConfig.ts

@@ -103,6 +103,8 @@ export const initialOptions: Config.InitialOptions = {
     'json',
     'jsx',
     'ts',
+    'mts',
+    'cts',
     'tsx',
     'node',
   ],
@@ -258,6 +260,8 @@ export const initialProjectOptions: Config.InitialProjectOptions = {
     'json',
     'jsx',
     'ts',
+    'mts',
+    'cts',
     'tsx',
     'node',
   ],

packages/jest-config/src/__tests__/normalize.test.ts

@@ -1722,6 +1722,8 @@ describe('moduleFileExtensions', () => {
       'cjs',
       'jsx',
       'ts',
+      'mts',
+      'cts',
       'tsx',
       'json',
       'node',