feat: stop shipping jsdom by default

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Features
 
 - `[expect]` [**BREAKING**] Migrate to ESM ([#12344](https://github.com/facebook/jest/pull/12344))
+- `[jest-config]` [**BREAKING**] Stop shipping `jest-environment-jsdom` by default ([#12354](https://github.com/facebook/jest/pull/12354))
 - `[jest-config]` [**BREAKING**] Stop shipping `jest-jasmine2` by default ([#12355](https://github.com/facebook/jest/pull/12355))
 - `[jest-environment-jsdom]` [**BREAKING**] Add default `browser` condition to `exportConditions` for `jsdom` environment ([#11924](https://github.com/facebook/jest/pull/11924))
 - `[jest-environment-jsdom]` [**BREAKING**] Migrate to ESM ([#12340](https://github.com/facebook/jest/pull/12340))

packages/jest-config/package.json

@@ -35,7 +35,6 @@
     "glob": "^7.1.1",
     "graceful-fs": "^4.2.9",
     "jest-circus": "^27.5.1",
-    "jest-environment-jsdom": "^27.5.1",
     "jest-environment-node": "^27.5.1",
     "jest-get-type": "^27.5.1",
     "jest-regex-util": "^27.5.1",

packages/jest-config/src/ValidConfig.ts

@@ -113,7 +113,7 @@ const initialOptions: Config.InitialOptions = {
   snapshotFormat: PRETTY_FORMAT_DEFAULTS,
   snapshotResolver: '<rootDir>/snapshotResolver.js',
   snapshotSerializers: ['my-serializer-module'],
-  testEnvironment: 'jest-environment-jsdom',
+  testEnvironment: 'jest-environment-node',
   testEnvironmentOptions: {userAgent: 'Agent/007'},
   testFailureExitCode: 1,
   testLocationInResults: false,

packages/jest-config/tsconfig.json

@@ -10,7 +10,6 @@
   // jest-test-sequencer, but that is just `require.resolve`d, so no real use
   // for their types
   "references": [
-    {"path": "../jest-environment-jsdom"},
     {"path": "../jest-environment-node"},
     {"path": "../jest-get-type"},
     {"path": "../jest-regex-util"},

packages/jest-resolve/src/utils.ts

@@ -101,15 +101,25 @@ export const resolveTestEnvironment = ({
   rootDir: Config.Path;
   testEnvironment: string;
   requireResolveFunction: (moduleName: string) => string;
-}): string =>
-  resolveWithPrefix(undefined, {
-    filePath,
-    humanOptionName: 'Test environment',
-    optionName: 'testEnvironment',
-    prefix: 'jest-environment-',
-    requireResolveFunction,
-    rootDir,
-  });
+}): string => {
+  try {
+    return resolveWithPrefix(undefined, {
+      filePath,
+      humanOptionName: 'Test environment',
+      optionName: 'testEnvironment',
+      prefix: 'jest-environment-',
+      requireResolveFunction,
+      rootDir,
+    });
+  } catch (error: any) {
+    if (filePath === 'jsdom' || filePath === 'jest-environment-jsdom') {
+      error.message +=
+        '\n\nAs of Jest 28 "jest-environment-jsdom" is no longer shipped by default, make sure to install it separately.';
+    }
+
+    throw error;
+  }
+};
 
 /**
  * Finds the watch plugins to use:

packages/jest-runner/package.json

@@ -27,7 +27,6 @@
     "emittery": "^0.8.1",
     "graceful-fs": "^4.2.9",
     "jest-docblock": "^27.5.1",
-    "jest-environment-jsdom": "^27.5.1",
     "jest-environment-node": "^27.5.1",
     "jest-haste-map": "^27.5.1",
     "jest-leak-detector": "^27.5.1",

packages/jest-runner/tsconfig.json

@@ -10,7 +10,6 @@
     {"path": "../jest-console"},
     {"path": "../jest-docblock"},
     {"path": "../jest-environment"},
-    {"path": "../jest-environment-jsdom"},
     {"path": "../jest-environment-node"},
     {"path": "../jest-haste-map"},
     {"path": "../jest-leak-detector"},

packages/jest-validate/src/__tests__/fixtures/jestConfig.ts

@@ -44,7 +44,7 @@ const defaultConfig = {
   restoreMocks: false,
   roots: ['<rootDir>'],
   snapshotSerializers: [],
-  testEnvironment: 'jest-environment-jsdom',
+  testEnvironment: 'jest-environment-node',
   testPathIgnorePatterns: [NODE_MODULES_REGEXP],
   testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.[jt]sx?$',
   testResultsProcessor: null,
@@ -106,7 +106,7 @@ const validConfig = {
   setupFilesAfterEnv: ['<rootDir>/testSetupFile.js'],
   silent: true,
   snapshotSerializers: ['my-serializer-module'],
-  testEnvironment: 'jest-environment-jsdom',
+  testEnvironment: 'jest-environment-node',
   testNamePattern: 'test signature',
   testPathIgnorePatterns: [NODE_MODULES_REGEXP],
   testRegex: '(/__tests__/.*|(\\.|/)(test|spec))\\.[jt]sx?$',

scripts/verifyPnP.js

@@ -34,6 +34,7 @@ try {
       {
         dependencies: {
           jest: '*',
+          'jest-environment-jsdom': '*',
         },
         name: 'test-pnp',
       },
@@ -42,7 +43,7 @@ try {
     ),
   );
   fs.writeFileSync(
-    path.join(cwd, 'test.js'),
+    path.join(cwd, 'jsdom.test.js'),
     dedent`
      /*
       * @jest-environment jsdom
@@ -53,6 +54,14 @@ try {
      });
     `,
   );
+  fs.writeFileSync(
+    path.join(cwd, 'node.test.js'),
+    dedent`
+     test('dummy', () => {
+       expect(typeof window).toBe('undefined');
+     });
+    `,
+  );
   execa.sync('yarn', ['link', '--private', '--all', rootDirectory], {
     cwd,
     stdio: 'inherit',

yarn.lock

@@ -12790,7 +12790,6 @@ __metadata:
     glob: ^7.1.1
     graceful-fs: ^4.2.9
     jest-circus: ^27.5.1
-    jest-environment-jsdom: ^27.5.1
     jest-environment-node: ^27.5.1
     jest-get-type: ^27.5.1
     jest-regex-util: ^27.5.1
@@ -12860,7 +12859,7 @@ __metadata:
   languageName: unknown
   linkType: soft
 
-"jest-environment-jsdom@^27.5.1, jest-environment-jsdom@workspace:packages/jest-environment-jsdom":
+"jest-environment-jsdom@workspace:packages/jest-environment-jsdom":
   version: 0.0.0-use.local
   resolution: "jest-environment-jsdom@workspace:packages/jest-environment-jsdom"
   dependencies:
@@ -13173,7 +13172,6 @@ __metadata:
     emittery: ^0.8.1
     graceful-fs: ^4.2.9
     jest-docblock: ^27.5.1
-    jest-environment-jsdom: ^27.5.1
     jest-environment-node: ^27.5.1
     jest-haste-map: ^27.5.1
     jest-jasmine2: ^27.5.1