chore: migrate jest-resolve to ESM (#10688)

CHANGELOG.md

@@ -12,6 +12,7 @@
 ### Chore & Maintenance
 
 - `[*]` [**BREAKING**] Only support Node LTS releases and Node 15 ([#10685](https://github.com/facebook/jest/pull/10685))
+- `[jest-resolve]` [**BREAKING**] Migrate to ESM ([#10688](https://github.com/facebook/jest/pull/10688))
 
 ### Performance
 

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

@@ -41,7 +41,7 @@ FAIL __tests__/index.js
       12 | module.exports = () => 'test';
       13 | 
 
-      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:551:17)
+      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:556:17)
       at Object.require (index.js:10:1)
 `;
 
@@ -70,6 +70,6 @@ FAIL __tests__/index.js
       12 | module.exports = () => 'test';
       13 | 
 
-      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:551:17)
+      at createNoMappedModuleFoundError (../../packages/jest-resolve/build/index.js:556:17)
       at Object.require (index.js:10:1)
 `;

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

@@ -37,6 +37,6 @@ FAIL __tests__/test.js
         |                  ^
       9 | 
 
-      at Resolver.resolveModule (../../packages/jest-resolve/build/index.js:306:11)
+      at Resolver.resolveModule (../../packages/jest-resolve/build/index.js:311:11)
       at Object.require (index.js:8:18)
 `;

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

@@ -16,7 +16,6 @@ import normalize from '../normalize';
 const DEFAULT_CSS_PATTERN = '\\.(css)$';
 
 jest
-  .mock('jest-resolve')
   .mock('path', () => jest.requireActual('path').posix)
   .mock('graceful-fs', () => {
     const realFs = jest.requireActual('fs');
@@ -56,7 +55,7 @@ beforeEach(() => {
   expectedPathAbs = path.join(root, 'an', 'abs', 'path');
   expectedPathAbsAnother = path.join(root, 'another', 'abs', 'path');
 
-  require('jest-resolve').findNodeModule = findNodeModule;
+  require('jest-resolve').default.findNodeModule = findNodeModule;
 
   jest.spyOn(console, 'warn');
 });
@@ -305,7 +304,7 @@ describe('roots', () => {
 describe('transform', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => name);
   });
 
@@ -351,7 +350,7 @@ describe('transform', () => {
 describe('haste', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => name);
   });
 
@@ -375,7 +374,7 @@ describe('haste', () => {
 describe('setupFilesAfterEnv', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name =>
       name.startsWith('/') ? name : '/root/path/foo' + path.sep + name,
     );
@@ -423,7 +422,7 @@ describe('setupTestFrameworkScriptFile', () => {
 
   beforeEach(() => {
     console.warn.mockImplementation(() => {});
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name =>
       name.startsWith('/') ? name : '/root/path/foo' + path.sep + name,
     );
@@ -672,7 +671,7 @@ describe('testRunner', () => {
   });
 
   it('is overwritten by argv', () => {
-    const Resolver = require('jest-resolve');
+    const Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => name);
     const {options} = normalize(
       {
@@ -703,7 +702,7 @@ describe('coverageDirectory', () => {
 describe('testEnvironment', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (['jsdom', 'jest-environment-jsdom'].includes(name)) {
         return `node_modules/${name}`;
@@ -757,7 +756,7 @@ describe('testEnvironment', () => {
 describe('babel-jest', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name =>
       name.indexOf('babel-jest') === -1
         ? path.sep + 'node_modules' + path.sep + name
@@ -798,7 +797,7 @@ describe('Upgrade help', () => {
   beforeEach(() => {
     console.warn.mockImplementation(() => {});
 
-    const Resolver = require('jest-resolve');
+    const Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (name == 'bar/baz') {
         return '/node_modules/bar/baz';
@@ -943,7 +942,7 @@ describe('moduleDirectories', () => {
 
 describe('preset', () => {
   beforeEach(() => {
-    const Resolver = require('jest-resolve');
+    const Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (name === 'react-native/jest-preset') {
         return '/node_modules/react-native/jest-preset.json';
@@ -1110,7 +1109,7 @@ describe('preset', () => {
   });
 
   test('searches for .json and .js preset files', () => {
-    const Resolver = require('jest-resolve');
+    const Resolver = require('jest-resolve').default;
 
     normalize(
       {
@@ -1224,7 +1223,7 @@ describe('preset', () => {
 
 describe('preset with globals', () => {
   beforeEach(() => {
-    const Resolver = require('jest-resolve');
+    const Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (name === 'global-foo/jest-preset') {
         return '/node_modules/global-foo/jest-preset.json';
@@ -1285,7 +1284,7 @@ describe.each(['setupFiles', 'setupFilesAfterEnv'])(
   configKey => {
     let Resolver;
     beforeEach(() => {
-      Resolver = require('jest-resolve');
+      Resolver = require('jest-resolve').default;
       Resolver.findNodeModule = jest.fn(
         name => path.sep + 'node_modules' + path.sep + name,
       );
@@ -1326,7 +1325,7 @@ describe.each(['setupFiles', 'setupFilesAfterEnv'])(
 describe('runner', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (['eslint', 'jest-runner-eslint', 'my-runner-foo'].includes(name)) {
         return `node_modules/${name}`;
@@ -1384,7 +1383,7 @@ describe('runner', () => {
 describe('watchPlugins', () => {
   let Resolver;
   beforeEach(() => {
-    Resolver = require('jest-resolve');
+    Resolver = require('jest-resolve').default;
     Resolver.findNodeModule = jest.fn(name => {
       if (
         ['typeahead', 'jest-watch-typeahead', 'my-watch-plugin'].includes(name)
@@ -1518,7 +1517,7 @@ describe('testPathPattern', () => {
       describe('win32', () => {
         beforeEach(() => {
           jest.mock('path', () => jest.requireActual('path').win32);
-          require('jest-resolve').findNodeModule = findNodeModule;
+          require('jest-resolve').default.findNodeModule = findNodeModule;
         });
 
         afterEach(() => {

packages/jest-config/src/normalize.ts

@@ -14,7 +14,7 @@ import {statSync} from 'graceful-fs';
 import micromatch = require('micromatch');
 import type {Config} from '@jest/types';
 import {replacePathSepForRegex} from 'jest-regex-util';
-import Resolver = require('jest-resolve');
+import Resolver from 'jest-resolve';
 import {clearLine, replacePathSepForGlob, tryRealpath} from 'jest-util';
 import {ValidationError, validate} from 'jest-validate';
 import DEFAULT_CONFIG from './Defaults';

packages/jest-config/src/utils.ts

@@ -8,7 +8,7 @@
 import * as path from 'path';
 import chalk = require('chalk');
 import type {Config} from '@jest/types';
-import Resolver = require('jest-resolve');
+import Resolver from 'jest-resolve';
 import {ValidationError} from 'jest-validate';
 
 type ResolveOptions = {

packages/jest-core/src/watch.ts

@@ -13,7 +13,7 @@ import slash = require('slash');
 import type {Config} from '@jest/types';
 import HasteMap = require('jest-haste-map');
 import {formatExecError} from 'jest-message-util';
-import Resolver = require('jest-resolve');
+import Resolver from 'jest-resolve';
 import type {Context} from 'jest-runtime';
 import {isInteractive, preRunMessage, specialChars} from 'jest-util';
 import {ValidationError} from 'jest-validate';

packages/jest-reporters/src/types.ts

@@ -13,7 +13,7 @@ import type {
 } from '@jest/test-result';
 import type {Config} from '@jest/types';
 import type {FS as HasteFS, ModuleMap} from 'jest-haste-map';
-import type {ResolverType} from 'jest-resolve';
+import type Resolver from 'jest-resolve';
 import type {worker} from './CoverageWorker';
 
 export type ReporterOnStartOptions = {
@@ -25,7 +25,7 @@ export type Context = {
   config: Config.ProjectConfig;
   hasteFS: HasteFS;
   moduleMap: ModuleMap;
-  resolver: ResolverType;
+  resolver: Resolver;
 };
 
 export type Test = {

packages/jest-resolve-dependencies/src/__tests__/dependency_resolver.test.ts

@@ -9,7 +9,7 @@ import {tmpdir} from 'os';
 import * as path from 'path';
 import {makeProjectConfig} from '@jest/test-utils';
 import type {Config} from '@jest/types';
-import Resolver = require('jest-resolve');
+import Resolver from 'jest-resolve';
 import {buildSnapshotResolver} from 'jest-snapshot';
 import DependencyResolver from '../index';
 

packages/jest-resolve-dependencies/src/index.ts

@@ -8,7 +8,7 @@
 import * as path from 'path';
 import type {Config} from '@jest/types';
 import type {FS as HasteFS} from 'jest-haste-map';
-import type {ResolveModuleConfig, ResolverType} from 'jest-resolve';
+import type {ResolveModuleConfig, default as Resolver} from 'jest-resolve';
 import {SnapshotResolver, isSnapshotPath} from 'jest-snapshot';
 
 declare namespace DependencyResolver {
@@ -24,11 +24,11 @@ declare namespace DependencyResolver {
  */
 class DependencyResolver {
   private _hasteFS: HasteFS;
-  private _resolver: ResolverType;
+  private _resolver: Resolver;
   private _snapshotResolver: SnapshotResolver;
 
   constructor(
-    resolver: ResolverType,
+    resolver: Resolver,
     hasteFS: HasteFS,
     snapshotResolver: SnapshotResolver,
   ) {

packages/jest-resolve/src/__tests__/resolve.test.ts

@@ -10,7 +10,7 @@ import * as path from 'path';
 import * as fs from 'graceful-fs';
 import {sync as resolveSync} from 'resolve';
 import {ModuleMap} from 'jest-haste-map';
-import Resolver = require('../');
+import Resolver from '../';
 import userResolver from '../__mocks__/userResolver';
 import defaultResolver from '../defaultResolver';
 import nodeModulesPaths from '../nodeModulesPaths';
@@ -286,7 +286,7 @@ describe('Resolver.getModulePaths() -> nodeModulesPaths()', () => {
   it('can resolve node modules relative to absolute paths in "moduleDirectories" on Windows platforms', () => {
     jest.doMock('path', () => _path.win32);
     const path = require('path');
-    const Resolver = require('../');
+    const Resolver = require('../').default;
 
     const cwd = 'D:\\temp\\project';
     const src = 'C:\\path\\to\\node_modules';
@@ -306,7 +306,7 @@ describe('Resolver.getModulePaths() -> nodeModulesPaths()', () => {
   it('can resolve node modules relative to absolute paths in "moduleDirectories" on Posix platforms', () => {
     jest.doMock('path', () => _path.posix);
     const path = require('path');
-    const Resolver = require('../');
+    const Resolver = require('../').default;
 
     const cwd = '/temp/project';
     const src = '/path/to/node_modules';

packages/jest-resolve/src/defaultResolver.ts

@@ -23,11 +23,11 @@ type ResolverOptions = {
   packageFilter?: ResolveOpts['packageFilter'];
 };
 
+// https://github.com/facebook/jest/pull/10617
 declare global {
   namespace NodeJS {
     export interface ProcessVersions {
-      // the "pnp" version named isn't in DefinitelyTyped
-      pnp?: unknown;
+      pnp?: any;
     }
   }
 }

packages/jest-resolve/src/index.ts

@@ -31,16 +31,13 @@ type FindNodeModuleConfig = {
   throwIfNotFound?: boolean;
 };
 
-// TODO: replace with a Map in Jest 26
+// TODO: replace with a Map in Jest 27
 type BooleanObject = Record<string, boolean>;
 
-declare namespace Resolver {
-  export type ResolveModuleConfig = {
-    skipNodeResolution?: boolean;
-    paths?: Array<Config.Path>;
-  };
-  export type ResolverType = Resolver;
-}
+export type ResolveModuleConfig = {
+  skipNodeResolution?: boolean;
+  paths?: Array<Config.Path>;
+};
 
 const NATIVE_PLATFORM = 'native';
 
@@ -139,7 +136,7 @@ class Resolver {
   resolveModuleFromDirIfExists(
     dirname: Config.Path,
     moduleName: string,
-    options?: Resolver.ResolveModuleConfig,
+    options?: ResolveModuleConfig,
   ): Config.Path | null {
     const paths = (options && options.paths) || this._options.modulePaths;
     const moduleDirectory = this._options.moduleDirectories;
@@ -227,7 +224,7 @@ class Resolver {
   resolveModule(
     from: Config.Path,
     moduleName: string,
-    options?: Resolver.ResolveModuleConfig,
+    options?: ResolveModuleConfig,
   ): Config.Path {
     const dirname = path.dirname(from);
     const module =
@@ -502,4 +499,4 @@ Please check your configuration for these entries:
   return error;
 };
 
-export = Resolver;
+export default Resolver;

packages/jest-runner/src/runTest.ts

@@ -24,7 +24,7 @@ import {getTestEnvironment} from 'jest-config';
 import * as docblock from 'jest-docblock';
 import LeakDetector from 'jest-leak-detector';
 import {formatExecError} from 'jest-message-util';
-import type {ResolverType} from 'jest-resolve';
+import type Resolver from 'jest-resolve';
 import RuntimeClass = require('jest-runtime');
 import {ErrorWithStack, interopRequireDefault, setGlobal} from 'jest-util';
 import type {TestFileEvent, TestFramework, TestRunnerContext} from './types';
@@ -79,7 +79,7 @@ async function runTestInternal(
   path: Config.Path,
   globalConfig: Config.GlobalConfig,
   config: Config.ProjectConfig,
-  resolver: ResolverType,
+  resolver: Resolver,
   context?: TestRunnerContext,
   sendMessageToJest?: TestFileEvent,
 ): Promise<RunTestInternalResult> {
@@ -331,7 +331,7 @@ export default async function runTest(
   path: Config.Path,
   globalConfig: Config.GlobalConfig,
   config: Config.ProjectConfig,
-  resolver: ResolverType,
+  resolver: Resolver,
   context?: TestRunnerContext,
   sendMessageToJest?: TestFileEvent,
 ): Promise<TestResult> {

packages/jest-runner/src/testWorker.ts

@@ -11,7 +11,7 @@ import type {SerializableError, TestResult} from '@jest/test-result';
 import type {Config} from '@jest/types';
 import HasteMap = require('jest-haste-map');
 import {separateMessageFromStack} from 'jest-message-util';
-import type {ResolverType} from 'jest-resolve';
+import type Resolver from 'jest-resolve';
 import Runtime = require('jest-runtime');
 import {messageParent} from 'jest-worker';
 import runTest from './runTest';
@@ -57,7 +57,7 @@ const formatError = (error: string | ErrorWithCode): SerializableError => {
   };
 };
 
-const resolvers = new Map<string, ResolverType>();
+const resolvers = new Map<string, Resolver>();
 const getResolver = (config: Config.ProjectConfig) => {
   const resolver = resolvers.get(config.name);
   if (!resolver) {