chore: use types from @jest/reporter in @jest/core (#8045)

Author: SimenB

CHANGELOG.md

@@ -74,7 +74,7 @@
 - `[jest-runner]`: Migrate to TypeScript ([#7968](https://github.com/facebook/jest/pull/7968))
 - `[jest-runtime]`: Migrate to TypeScript ([#7964](https://github.com/facebook/jest/pull/7964), [#7988](https://github.com/facebook/jest/pull/7988))
 - `[@jest/fake-timers]`: Extract FakeTimers class from `jest-util` into a new separate package ([#7987](https://github.com/facebook/jest/pull/7987))
-- `[@jest/reporters]`: Migrate to TypeScript ([#7994](https://github.com/facebook/jest/pull/7994))
+- `[@jest/reporters]`: Migrate to TypeScript ([#7994](https://github.com/facebook/jest/pull/7994), [#8045](https://github.com/facebook/jest/pull/8045))
 - `[jest-repl]`: Migrate to TypeScript ([#8000](https://github.com/facebook/jest/pull/8000))
 - `[jest-validate]`: Migrate to TypeScript ([#7991](https://github.com/facebook/jest/pull/7991))
 - `[docs]`: Update CONTRIBUTING.md to add information about running jest with `jest-circus` locally ([#8013](https://github.com/facebook/jest/pull/8013)).

packages/jest-circus/src/globalErrorHandlers.ts

@@ -8,14 +8,13 @@
 import {dispatch} from './state';
 import {GlobalErrorHandlers} from './types';
 
-type Process = NodeJS.Process;
-
-const uncaught = (error: Error) => {
+const uncaught: NodeJS.UncaughtExceptionListener &
+  NodeJS.UnhandledRejectionListener = (error: unknown) => {
   dispatch({error, name: 'error'});
 };
 
 export const injectGlobalErrorHandlers = (
-  parentProcess: Process,
+  parentProcess: NodeJS.Process,
 ): GlobalErrorHandlers => {
   const uncaughtException = process.listeners('uncaughtException').slice();
   const unhandledRejection = process.listeners('unhandledRejection').slice();
@@ -27,7 +26,7 @@ export const injectGlobalErrorHandlers = (
 };
 
 export const restoreGlobalErrorHandlers = (
-  parentProcess: Process,
+  parentProcess: NodeJS.Process,
   originalErrorHandlers: GlobalErrorHandlers,
 ) => {
   parentProcess.removeListener('uncaughtException', uncaught);

packages/jest-core/src/ReporterDispatcher.ts

@@ -8,7 +8,7 @@
 import {TestResult} from '@jest/types';
 import {Test} from 'jest-runner';
 import {Context} from 'jest-runtime';
-import {Reporter, ReporterOnStartOptions} from './types';
+import {Reporter, ReporterOnStartOptions} from '@jest/reporters';
 
 export default class ReporterDispatcher {
   private _reporters: Array<Reporter>;

packages/jest-core/src/TestScheduler.ts

@@ -17,7 +17,7 @@ import {
   NotifyReporter,
   SummaryReporter,
   VerboseReporter,
-  // @ts-ignore: Not migrated to TS
+  Reporter,
 } from '@jest/reporters';
 import exit from 'exit';
 import {
@@ -28,7 +28,6 @@ import {
 import ReporterDispatcher from './ReporterDispatcher';
 import TestWatcher from './TestWatcher';
 import {shouldRunInBand} from './testSchedulerHelper';
-import {Reporter} from './types';
 
 // The default jest-runner is required because it is the default test runner
 // and required implicitly through the `runner` ProjectConfig option.

packages/jest-core/src/types.ts

@@ -7,7 +7,7 @@
 
 import {Context} from 'jest-runtime';
 import {Test} from 'jest-runner';
-import {Config, TestResult} from '@jest/types';
+import {Config} from '@jest/types';
 
 export type TestRunData = Array<{
   context: Context;
@@ -38,27 +38,3 @@ export type TestPathCases = {
 export type TestPathCasesWithPathPattern = TestPathCases & {
   testPathPattern: (path: Config.Path) => boolean;
 };
-
-// TODO: Obtain this from @jest/reporters once its been migrated
-export type ReporterOnStartOptions = {
-  estimatedTime: number;
-  showStatus: boolean;
-};
-
-export type Reporter = {
-  onTestResult: (
-    test: Test,
-    testResult: TestResult.TestResult,
-    aggregatedResult: TestResult.AggregatedResult,
-  ) => Promise<void>;
-  onRunStart: (
-    results: TestResult.AggregatedResult,
-    options: ReporterOnStartOptions,
-  ) => Promise<void>;
-  onTestStart: (test: Test) => Promise<void>;
-  onRunComplete: (
-    contexts: Set<Context>,
-    results: TestResult.AggregatedResult,
-  ) => Promise<void>;
-  getLastError: () => Error;
-};

packages/jest-core/tsconfig.json

@@ -4,14 +4,14 @@
     "rootDir": "src",
     "outDir": "build"
   },
-  // TODO: This is missing `@jest/reporters`
   "references": [
     {"path": "../jest-changed-files"},
     {"path": "../jest-config"},
     {"path": "../jest-console"},
     {"path": "../jest-haste-map"},
     {"path": "../jest-message-util"},
     {"path": "../jest-regex-util"},
+    {"path": "../jest-reporters"},
     {"path": "../jest-resolve-dependencies"},
     {"path": "../jest-runner"},
     {"path": "../jest-runtime"},

packages/jest-haste-map/src/crawlers/node.ts

@@ -96,6 +96,11 @@ function findNative(
 
   const child = spawn('find', args);
   let stdout = '';
+  if (child.stdout === null) {
+    throw new Error(
+      'stdout is null - this should never happen. Please open up an issue at https://github.com/facebook/jest',
+    );
+  }
   child.stdout.setEncoding('utf-8');
   child.stdout.on('data', data => (stdout += data));
 

packages/jest-reporters/src/index.ts

@@ -11,3 +11,4 @@ export {default as DefaultReporter} from './default_reporter';
 export {default as NotifyReporter} from './notify_reporter';
 export {default as SummaryReporter} from './summary_reporter';
 export {default as VerboseReporter} from './verbose_reporter';
+export {Reporter, ReporterOnStartOptions} from './types';

packages/jest-worker/src/workers/ChildProcessWorker.ts

@@ -158,10 +158,20 @@ export default class ChildProcessWorker implements WorkerInterface {
   }
 
   getStdout(): NodeJS.ReadableStream {
+    if (this._child.stdout === null) {
+      throw new Error(
+        'stdout is null - this should never happen. Please open up an issue at https://github.com/facebook/jest',
+      );
+    }
     return this._child.stdout;
   }
 
   getStderr(): NodeJS.ReadableStream {
+    if (this._child.stderr === null) {
+      throw new Error(
+        'stderr is null - this should never happen. Please open up an issue at https://github.com/facebook/jest',
+      );
+    }
     return this._child.stderr;
   }
 }

yarn.lock

@@ -1733,9 +1733,9 @@
   integrity sha512-bNtBj6AF1F90jp54KRPOrYfilGNfPr2kpaUN7rMJjauAtfGBXzT/T/REZN6jb4qUs9FTxU37kir3Nrn5WsTUDw==
 
 "@types/node@*", "@types/node@^11.9.6":
-  version "11.9.6"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-11.9.6.tgz#c632bbcc780a1349673a6e2e9b9dfa8c369d3c74"
-  integrity sha512-4hS2K4gwo9/aXIcoYxCtHpdgd8XUeDmo1siRCAH3RziXB65JlPqUFMtfy9VPj+og7dp3w1TFjGwYga4e0m9GwA==
+  version "11.10.4"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-11.10.4.tgz#3f5fc4f0f322805f009e00ab35a2ff3d6b778e42"
+  integrity sha512-wa09itaLE8L705aXd8F80jnFpxz3Y1/KRHfKsYL2bPc0XF+wEWu8sR9n5bmeu8Ba1N9z2GRNzm/YdHcghLkLKg==
 
 "@types/p-each-series@^1.0.0":
   version "1.0.0"