.circleci/config.yml

@@ -19,54 +19,40 @@ jobs:
     parameters:
       node-version:
         type: string
-      partial:
-        type: boolean
-        default: false
     working_directory: ~/jest
     executor: node/default
+    parallelism: 4
     steps:
       - checkout
       - node/install:
           node-version: << parameters.node-version >>
       - node/install-packages: *install
-      - when:
-          condition: << parameters.partial >>
-          steps:
-            - run:
-                command: yarn test-ci-partial
-      - unless:
-          condition: << parameters.partial >>
-          steps:
-            - run:
-                command: yarn test-ci
+      - run:
+          command: yarn test-ci-partial --shard=$(expr $CIRCLE_NODE_INDEX + 1)/$CIRCLE_NODE_TOTAL
       - store_test_results:
           path: reports/junit
 
   test-jest-jasmine:
     working_directory: ~/jest
     executor: node/default
+    parallelism: 4
     steps:
       - checkout
       - node/install:
           node-version: lts/*
       - node/install-packages: *install
       - run:
-          command: JEST_JASMINE=1 yarn test-ci-partial && JEST_JASMINE=1 yarn test-leak
+          command: JEST_JASMINE=1 yarn test-ci-partial --shard=$(expr $CIRCLE_NODE_INDEX + 1)/$CIRCLE_NODE_TOTAL && JEST_JASMINE=1 yarn test-leak
       - store_test_results:
           path: reports/junit
 
 # Workflows enables us to run multiple jobs in parallel
 workflows:
   build-and-deploy:
     jobs:
-      - test-node:
-          matrix:
-            parameters:
-              node-version: ['lts/*']
       - test-node:
           name: test-node-partial-<< matrix.node-version >>
-          partial: true
           matrix:
             parameters:
-              node-version: ['10', '12', '15', '16', '17']
+              node-version: ['12', '14', '16', '17', '18']
       - test-jest-jasmine

.codecov.yml

@@ -0,0 +1,13 @@
+codecov:
+  require_ci_to_pass: false
+
+comment: false
+
+coverage:
+  status:
+    patch:
+      default:
+        target: auto
+    project:
+      default:
+        target: auto

.eslintignore

@@ -1,14 +1,19 @@
+!.*
 **/coverage/**
 **/node_modules/**
 bin/
-flow-typed/**
 packages/*/build/**
 packages/*/dist/**
-packages/jest-diff/src/cleanupSemantic.ts
 website/.docusaurus
 website/blog
 website/build
 website/node_modules
 website/i18n/*.js
 website/static
-!.eslintrc.js
+
+# Third-party script
+packages/jest-diff/src/cleanupSemantic.ts
+
+**/.yarn
+**/.pnp.*
+

.eslintplugin/index.js

@@ -9,6 +9,10 @@ exports.rules = {
   'ban-types-eventually': require('@typescript-eslint/eslint-plugin').rules[
     'ban-types'
   ],
-  'prefer-rest-params-eventually': require('eslint/lib/rules/prefer-rest-params'),
-  'prefer-spread-eventually': require('eslint/lib/rules/prefer-spread'),
+  'prefer-rest-params-eventually':
+    require('eslint/use-at-your-own-risk').builtinRules.get(
+      'prefer-rest-params',
+    ),
+  'prefer-spread-eventually':
+    require('eslint/use-at-your-own-risk').builtinRules.get('prefer-spread'),
 };

.eslintrc.js → .eslintrc.cjs

@@ -5,24 +5,35 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-const {getPackages} = require('./scripts/buildUtils');
+const fs = require('fs');
+const path = require('path');
+const {sync: readPkg} = require('read-pkg');
 
-const internalPackages = getPackages()
-  .map(({pkg}) => pkg.name)
-  .sort();
+function getPackages() {
+  const PACKAGES_DIR = path.resolve(__dirname, 'packages');
+  const packages = fs
+    .readdirSync(PACKAGES_DIR)
+    .map(file => path.resolve(PACKAGES_DIR, file))
+    .filter(f => fs.lstatSync(path.resolve(f)).isDirectory());
+  return packages.map(packageDir => {
+    const pkg = readPkg({cwd: packageDir});
+    return pkg.name;
+  });
+}
 
 module.exports = {
   env: {
+    es2020: true,
     'jest/globals': true,
-    node: true,
   },
   extends: [
+    'plugin:markdown/recommended',
     'plugin:import/errors',
     'plugin:eslint-comments/recommended',
     'plugin:prettier/recommended',
   ],
   globals: {
-    BigInt: 'readonly',
+    console: 'readonly',
   },
   overrides: [
     {
@@ -35,19 +46,13 @@ module.exports = {
       rules: {
         '@typescript-eslint/array-type': ['error', {default: 'generic'}],
         '@typescript-eslint/ban-types': 'error',
-        '@typescript-eslint/no-implicit-any-catch': [
-          'error',
-          {allowExplicitAny: true},
-        ],
         '@typescript-eslint/no-unused-vars': [
           'error',
           {argsIgnorePattern: '^_'},
         ],
         '@typescript-eslint/prefer-ts-expect-error': 'error',
-        // TS verifies this
+        // TS verifies these
         'consistent-return': 'off',
-        // Since we do `export =`. Remove for Jest 27
-        'import/default': 'off',
         'no-dupe-class-members': 'off',
         'no-unused-vars': 'off',
       },
@@ -95,12 +100,9 @@ module.exports = {
         'packages/expect/src/matchers.ts',
         'packages/expect/src/print.ts',
         'packages/expect/src/toThrowMatchers.ts',
-        'packages/expect/src/utils.ts',
-        'packages/jest-core/src/ReporterDispatcher.ts',
-        'packages/jest-core/src/TestScheduler.ts',
+        'packages/expect-utils/src/utils.ts',
         'packages/jest-core/src/collectHandles.ts',
         'packages/jest-core/src/plugins/UpdateSnapshotsInteractive.ts',
-        'packages/jest-fake-timers/src/legacyFakeTimers.ts',
         'packages/jest-haste-map/src/index.ts',
         'packages/jest-haste-map/src/watchers/FSEventsWatcher.ts',
         'packages/jest-jasmine2/src/jasmine/SpyStrategy.ts',
@@ -113,8 +115,6 @@ module.exports = {
         'packages/jest-snapshot/src/printSnapshot.ts',
         'packages/jest-snapshot/src/types.ts',
         'packages/jest-util/src/convertDescriptorToString.ts',
-        'packages/jest-worker/src/Farm.ts',
-        'packages/jest-worker/src/index.ts',
         'packages/pretty-format/src/index.ts',
         'packages/pretty-format/src/plugins/DOMCollection.ts',
       ],
@@ -142,10 +142,12 @@ module.exports = {
 
     // to make it more suitable for running on code examples in docs/ folder
     {
-      files: ['*.md'],
+      files: ['**/*.md/**'],
       rules: {
+        '@typescript-eslint/no-unused-vars': 'off',
         'arrow-body-style': 'off',
         'consistent-return': 'off',
+        'import/export': 'off',
         'import/no-extraneous-dependencies': 'off',
         'import/no-unresolved': 'off',
         'no-console': 'off',
@@ -157,7 +159,7 @@ module.exports = {
     },
     // snapshots in examples plus inline snapshots need to keep backtick
     {
-      files: ['*.md', 'e2e/custom-inline-snapshot-matchers/__tests__/*'],
+      files: ['**/*.md/**', 'e2e/custom-inline-snapshot-matchers/__tests__/*'],
       rules: {
         quotes: [
           'error',
@@ -171,6 +173,7 @@ module.exports = {
       rules: {
         'import/order': 'off',
         'import/sort-keys': 'off',
+        'no-restricted-globals': ['off'],
         'sort-keys': 'off',
       },
     },
@@ -181,12 +184,6 @@ module.exports = {
         'import/order': 'off',
       },
     },
-    {
-      files: 'packages/jest-types/**/*',
-      rules: {
-        'import/no-extraneous-dependencies': 'off',
-      },
-    },
     {
       files: 'packages/**/*.ts',
       rules: {
@@ -220,8 +217,7 @@ module.exports = {
     {
       files: [
         'packages/jest-jasmine2/src/jasmine/**/*',
-        'packages/expect/src/jasmineUtils.ts',
-        '**/vendor/**/*',
+        'packages/expect-utils/src/jasmineUtils.ts',
       ],
       rules: {
         'eslint-comments/disable-enable-pair': 'off',
@@ -234,33 +230,40 @@ module.exports = {
         'e2e/jasmine-async/__tests__/*',
       ],
       globals: {
-        fail: true,
-        jasmine: true,
-        pending: true,
+        fail: 'readonly',
+        jasmine: 'readonly',
+        pending: 'readonly',
       },
     },
     {
       files: [
+        'e2e/**',
         'website/**',
+        '**/__benchmarks__/**',
         '**/__tests__/**',
-        'e2e/**',
-        '**/pretty-format/perf/**',
+        'packages/jest-types/**/*',
+        '.eslintplugin/**',
       ],
       rules: {
         'import/no-extraneous-dependencies': 'off',
       },
     },
     {
-      files: ['**/__typetests__/**', '*.md'],
+      files: ['**/__typetests__/**', '**/*.md/**'],
       rules: {
         'jest/no-focused-tests': 'off',
         'jest/no-identical-title': 'off',
         'jest/valid-expect': 'off',
       },
     },
+    {
+      env: {node: true},
+      files: ['*.js', '*.jsx', '*.mjs', '*.cjs'],
+    },
     {
       files: [
         'scripts/*',
+        'packages/*/__benchmarks__/test.js',
         'packages/jest-cli/src/init/index.ts',
         'packages/jest-repl/src/cli/runtime-cli.ts',
       ],
@@ -272,14 +275,10 @@ module.exports = {
       files: [
         'e2e/**',
         'examples/**',
-        'scripts/*',
         'website/**',
         '**/__mocks__/**',
         '**/__tests__/**',
         '**/__typetests__/**',
-        '**/__performance_tests__/**',
-        'packages/diff-sequences/perf/index.js',
-        'packages/pretty-format/perf/test.js',
       ],
       rules: {
         '@typescript-eslint/no-unused-vars': 'off',
@@ -293,7 +292,7 @@ module.exports = {
   parserOptions: {
     sourceType: 'module',
   },
-  plugins: ['markdown', 'import', 'jest'],
+  plugins: ['import', 'jest'],
   rules: {
     'accessor-pairs': ['warn', {setWithoutGet: true}],
     'block-scoped-var': 'off',
@@ -327,7 +326,7 @@ module.exports = {
           'scripts/**',
           'babel.config.js',
           'testSetupFile.js',
-          '.eslintrc.js',
+          '.eslintrc.cjs',
         ],
       },
     ],
@@ -367,7 +366,6 @@ module.exports = {
     'no-bitwise': 'warn',
     'no-caller': 'error',
     'no-case-declarations': 'off',
-    'no-catch-shadow': 'error',
     'no-class-assign': 'warn',
     'no-cond-assign': 'off',
     'no-confusing-arrow': 'off',
@@ -429,13 +427,20 @@ module.exports = {
     'no-octal': 'warn',
     'no-octal-escape': 'warn',
     'no-param-reassign': 'off',
-    'no-path-concat': 'off',
     'no-plusplus': 'off',
     'no-process-env': 'off',
     'no-process-exit': 'off',
     'no-proto': 'error',
+    'no-prototype-builtins': 'error',
     'no-redeclare': 'warn',
     'no-regex-spaces': 'warn',
+    'no-restricted-globals': [
+      'error',
+      {
+        message: 'Use `globalThis` instead.',
+        name: 'global',
+      },
+    ],
     'no-restricted-imports': [
       'error',
       {message: 'Please use graceful-fs instead.', name: 'fs'},
@@ -462,9 +467,9 @@ module.exports = {
     'no-unused-expressions': 'off',
     'no-unused-vars': ['error', {argsIgnorePattern: '^_'}],
     'no-use-before-define': 'off',
-    'no-useless-call': 'warn',
+    'no-useless-call': 'error',
     'no-useless-computed-key': 'error',
-    'no-useless-concat': 'warn',
+    'no-useless-concat': 'error',
     'no-var': 'error',
     'no-void': 'off',
     'no-warn-comments': 'off',
@@ -476,7 +481,7 @@ module.exports = {
     'padded-blocks': 'off',
     'prefer-arrow-callback': ['error', {allowNamedFunctions: true}],
     'prefer-const': 'error',
-    'prefer-template': 'off',
+    'prefer-template': 'error',
     quotes: [
       'error',
       'single',
@@ -502,7 +507,9 @@ module.exports = {
     'import/ignore': ['react-native'],
     // using `new RegExp` makes sure to escape `/`
     'import/internal-regex': new RegExp(
-      internalPackages.map(pkg => `^${pkg}$`).join('|'),
+      getPackages()
+        .map(pkg => `^${pkg}$`)
+        .join('|'),
     ).source,
     'import/resolver': {
       typescript: {},

.gitattributes

@@ -0,0 +1 @@
+* text=auto eol=lf