feat(jest-core, jest-watcher)!: move TestWatcher class to jest-watcher

CHANGELOG.md

@@ -17,6 +17,7 @@
 - `[jest-cli, jest-core]` Add `--ignoreProjects` CLI argument to ignore test suites by project name ([#12620](https://github.com/facebook/jest/pull/12620))
 - `[jest-core]` Pass project config to `globalSetup`/`globalTeardown` function as second argument ([#12440](https://github.com/facebook/jest/pull/12440))
 - `[jest-core]` Stabilize test runners with event emitters ([#12641](https://github.com/facebook/jest/pull/12641))
+- `[jest-core, jest-watcher]` [**BREAKING**] Move `TestWatcher` class to `jest-watcher` package ([#12652](https://github.com/facebook/jest/pull/12652))
 - `[jest-environment-jsdom]` [**BREAKING**] Upgrade jsdom to 19.0.0 ([#12290](https://github.com/facebook/jest/pull/12290))
 - `[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**] Pass global config to Jest environment constructor for `jsdom` environment ([#12461](https://github.com/facebook/jest/pull/12461))

e2e/transform/transform-runner/runner.ts

@@ -13,8 +13,8 @@ import type {
   OnTestStart,
   OnTestSuccess,
   TestRunnerContext,
-  TestWatcher,
 } from 'jest-runner';
+import type {TestWatcher} from 'jest-watcher';
 
 export default class BaseTestRunner {
   private _globalConfig: Config.GlobalConfig;

packages/jest-core/package.json

@@ -20,7 +20,6 @@
     "@types/node": "*",
     "ansi-escapes": "^4.2.1",
     "chalk": "^4.0.0",
-    "emittery": "^0.10.2",
     "exit": "^0.1.2",
     "graceful-fs": "^4.2.9",
     "jest-changed-files": "^28.0.0-alpha.3",

packages/jest-core/src/TestScheduler.ts

@@ -36,8 +36,8 @@ import {
   cleanup as cleanupSnapshots,
 } from 'jest-snapshot';
 import {requireOrImportModule} from 'jest-util';
+import type {TestWatcher} from 'jest-watcher';
 import ReporterDispatcher from './ReporterDispatcher';
-import type TestWatcher from './TestWatcher';
 import {shouldRunInBand} from './testSchedulerHelper';
 
 type TestRunnerConstructor = new (

packages/jest-core/src/__tests__/watch.test.js

@@ -7,9 +7,8 @@
  */
 
 import chalk from 'chalk';
-import {JestHook, KEYS} from 'jest-watcher';
 // eslint-disable-next-line import/order
-import TestWatcher from '../TestWatcher';
+import {JestHook, KEYS, TestWatcher} from 'jest-watcher';
 
 const runJestMock = jest.fn();
 const watchPluginPath = `${__dirname}/__fixtures__/watchPlugin`;

packages/jest-core/src/cli/index.ts

@@ -16,7 +16,7 @@ import {readConfigs} from 'jest-config';
 import type HasteMap from 'jest-haste-map';
 import Runtime, {Context} from 'jest-runtime';
 import {createDirectory, preRunMessage} from 'jest-util';
-import TestWatcher from '../TestWatcher';
+import {TestWatcher} from 'jest-watcher';
 import {formatHandleErrors} from '../collectHandles';
 import getChangedFilesPromise from '../getChangedFilesPromise';
 import getConfigsOfProjectsToRun from '../getConfigsOfProjectsToRun';

packages/jest-core/src/index.ts

@@ -7,6 +7,5 @@
 
 export {default as SearchSource} from './SearchSource';
 export {createTestScheduler} from './TestScheduler';
-export {default as TestWatcher} from './TestWatcher';
 export {runCLI} from './cli';
 export {default as getVersion} from './version';

packages/jest-core/src/runJest.ts

@@ -24,10 +24,10 @@ import Resolver from 'jest-resolve';
 import type {Context} from 'jest-runtime';
 import {requireOrImportModule, tryRealpath} from 'jest-util';
 import {JestHook, JestHookEmitter} from 'jest-watcher';
+import type {TestWatcher} from 'jest-watcher';
 import type FailedTestsCache from './FailedTestsCache';
 import SearchSource from './SearchSource';
 import {TestSchedulerContext, createTestScheduler} from './TestScheduler';
-import type TestWatcher from './TestWatcher';
 import collectNodeHandles, {HandleCollectionResult} from './collectHandles';
 import getNoTestsFoundMessage from './getNoTestsFoundMessage';
 import runGlobalHook from './runGlobalHook';

packages/jest-core/src/watch.ts

@@ -28,12 +28,12 @@ import {
   AllowedConfigOptions,
   JestHook,
   KEYS,
+  TestWatcher,
   WatchPlugin,
   WatchPluginClass,
 } from 'jest-watcher';
 import FailedTestsCache from './FailedTestsCache';
 import SearchSource from './SearchSource';
-import TestWatcher from './TestWatcher';
 import getChangedFilesPromise from './getChangedFilesPromise';
 import activeFilters from './lib/activeFiltersMessage';
 import createContext from './lib/createContext';

packages/jest-runner/__typetests__/jest-runner.test.ts

@@ -15,9 +15,9 @@ import type {
   OnTestSuccess,
   TestRunnerContext,
   TestRunnerOptions,
-  TestWatcher,
   UnsubscribeFn,
 } from 'jest-runner';
+import type {TestWatcher} from 'jest-watcher';
 
 const globalConfig = {} as Config.GlobalConfig;
 const runnerContext = {} as TestRunnerContext;

packages/jest-runner/package.json

@@ -34,6 +34,7 @@
     "jest-resolve": "^28.0.0-alpha.8",
     "jest-runtime": "^28.0.0-alpha.8",
     "jest-util": "^28.0.0-alpha.8",
+    "jest-watcher": "^28.0.0-alpha.8",
     "jest-worker": "^28.0.0-alpha.8",
     "source-map-support": "^0.5.6",
     "throat": "^6.0.1"

packages/jest-runner/src/__tests__/testRunner.test.ts

@@ -6,9 +6,9 @@
  *
  */
 
-import {TestWatcher} from '@jest/core';
 import type {TestContext} from '@jest/test-result';
 import {makeGlobalConfig, makeProjectConfig} from '@jest/test-utils';
+import {TestWatcher} from 'jest-watcher';
 import TestRunner from '../index';
 
 let mockWorkerFarm;

packages/jest-runner/src/index.ts

@@ -15,15 +15,11 @@ import type {
   TestResult,
 } from '@jest/test-result';
 import {deepCyclicCopy} from 'jest-util';
+import type {TestWatcher} from 'jest-watcher';
 import {PromiseWithCustomMessage, Worker} from 'jest-worker';
 import runTest from './runTest';
 import type {SerializableResolver, worker} from './testWorker';
-import {
-  EmittingTestRunner,
-  TestRunnerOptions,
-  TestWatcher,
-  UnsubscribeFn,
-} from './types';
+import {EmittingTestRunner, TestRunnerOptions, UnsubscribeFn} from './types';
 
 const TEST_WORKER_PATH = require.resolve('./testWorker');
 
@@ -36,7 +32,6 @@ export type {
   OnTestFailure,
   OnTestStart,
   OnTestSuccess,
-  TestWatcher,
   TestRunnerContext,
   TestRunnerOptions,
   JestTestRunner,

packages/jest-runner/src/types.ts

@@ -5,7 +5,6 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-import type Emittery = require('emittery');
 import type {JestEnvironment} from '@jest/environment';
 import type {
   SerializableError,
@@ -16,6 +15,7 @@ import type {
 } from '@jest/test-result';
 import type {Config} from '@jest/types';
 import type RuntimeType from 'jest-runtime';
+import type {TestWatcher} from 'jest-watcher';
 
 export type ErrorWithCode = Error & {code?: string};
 
@@ -96,12 +96,3 @@ export abstract class EmittingTestRunner extends BaseTestRunner {
 }
 
 export type JestTestRunner = CallbackTestRunner | EmittingTestRunner;
-
-// TODO: Should live in `@jest/core` or `jest-watcher`
-type WatcherState = {interrupted: boolean};
-export interface TestWatcher extends Emittery<{change: WatcherState}> {
-  state: WatcherState;
-  setState(state: WatcherState): void;
-  isInterrupted(): boolean;
-  isWatchMode(): boolean;
-}

packages/jest-runner/tsconfig.json

@@ -20,6 +20,7 @@
     {"path": "../jest-transform"},
     {"path": "../jest-types"},
     {"path": "../jest-util"},
+    {"path": "../jest-watcher"},
     {"path": "../jest-worker"}
   ]
 }

packages/jest-watcher/package.json

@@ -17,6 +17,7 @@
     "@types/node": "*",
     "ansi-escapes": "^4.2.1",
     "chalk": "^4.0.0",
+    "emittery": "^0.10.2",
     "jest-util": "^28.0.0-alpha.8",
     "string-length": "^4.0.1"
   },

packages/jest-watcher/src/index.ts

@@ -8,6 +8,7 @@
 export {default as BaseWatchPlugin} from './BaseWatchPlugin';
 export {default as JestHook} from './JestHooks';
 export {default as PatternPrompt} from './PatternPrompt';
+export {default as TestWatcher} from './TestWatcher';
 export * from './constants';
 export type {
   AllowedConfigOptions,

packages/jest/src/index.ts

@@ -7,7 +7,6 @@
 
 export {
   SearchSource,
-  TestWatcher,
   createTestScheduler,
   getVersion,
   runCLI,

yarn.lock

@@ -2557,7 +2557,6 @@ __metadata:
     "@types/rimraf": ^3.0.0
     ansi-escapes: ^4.2.1
     chalk: ^4.0.0
-    emittery: ^0.10.2
     exit: ^0.1.2
     graceful-fs: ^4.2.9
     jest-changed-files: ^28.0.0-alpha.3
@@ -13514,6 +13513,7 @@ __metadata:
     jest-resolve: ^28.0.0-alpha.8
     jest-runtime: ^28.0.0-alpha.8
     jest-util: ^28.0.0-alpha.8
+    jest-watcher: ^28.0.0-alpha.8
     jest-worker: ^28.0.0-alpha.8
     source-map-support: ^0.5.6
     throat: ^6.0.1
@@ -13721,6 +13721,7 @@ __metadata:
     "@types/node": "*"
     ansi-escapes: ^4.2.1
     chalk: ^4.0.0
+    emittery: ^0.10.2
     jest-util: ^28.0.0-alpha.8
     string-length: ^4.0.1
   languageName: unknown