Add `waitNextEventLoopTurnForUnhandledRejectionEvents` flag (#14681)

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ### Features
 
+- `[jest-circus, jest-cli, jest-config]` Add `waitNextEventLoopTurnForUnhandledRejectionEvents` flag to minimise performance impact of correct detection of unhandled promise rejections introduced in [#14315](https://github.com/jestjs/jest/pull/14315) ([#14681](https://github.com/jestjs/jest/pull/14681))
 - `[jest-config]` [**BREAKING**] Add `mts` and `cts` to default `moduleFileExtensions` config ([#14369](https://github.com/facebook/jest/pull/14369))
 - `[jest-config]` [**BREAKING**] Update `testMatch` and `testRegex` default option for supporting `mjs`, `cjs`, `mts`, and `cts` ([#14584](https://github.com/jestjs/jest/pull/14584))
 - `[@jest/core]` [**BREAKING**] Group together open handles with the same stack trace ([#13417](https://github.com/jestjs/jest/pull/13417), & [#14543](https://github.com/jestjs/jest/pull/14543))

docs/CLI.md

@@ -517,6 +517,14 @@ Display individual test results with the test suite hierarchy.
 
 Alias: `-v`. Print the version and exit.
 
+### `--waitNextEventLoopTurnForUnhandledRejectionEvents`
+
+Gives one event loop turn to handle `rejectionHandled`, `uncaughtException` or `unhandledRejection`.
+
+Without this flag Jest may report false-positive errors (e.g. actually handled rejection reported) or not report actually unhandled rejection (or report it for different test case).
+
+This option may add a noticeable overhead for fast test suites.
+
 ### `--watch`
 
 Watch files for changes and rerun tests related to changed files. If you want to re-run all tests when a file has changed, use the `--watchAll` option instead.

docs/Configuration.md

@@ -2367,6 +2367,14 @@ Default: `false` or `true` if there is only one test file to run
 
 Indicates whether each individual test should be reported during the run. All errors will also still be shown on the bottom after execution.
 
+### `waitNextEventLoopTurnForUnhandledRejectionEvents` \[boolean]
+
+Gives one event loop turn to handle `rejectionHandled`, `uncaughtException` or `unhandledRejection`.
+
+Without this flag Jest may report false-positive errors (e.g. actually handled rejection reported) or not report actually unhandled rejection (or report it for different test case).
+
+This option may add a noticeable overhead for fast test suites.
+
 ### `watchPathIgnorePatterns` \[array<string>]
 
 Default: `[]`

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

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`prints useful error for environment methods after test is done 1`] = `
+exports[`prints useful error for environment methods after test is done w/ \`waitNextEventLoopTurnForUnhandledRejectionEvents\` 1`] = `
 "    ReferenceError: You are trying to access a property or method of the Jest environment outside of the scope of the test code.
 
        9 | test('access environment methods after done', () => {
@@ -11,3 +11,15 @@ exports[`prints useful error for environment methods after test is done 1`] = `
       13 | });
       14 |"
 `;
+
+exports[`prints useful error for environment methods after test is done w/o \`waitNextEventLoopTurnForUnhandledRejectionEvents\` 1`] = `
+"ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From __tests__/afterTeardown.test.js.
+
+       9 | test('access environment methods after done', () => {
+      10 |   setTimeout(() => {
+    > 11 |     jest.clearAllTimers();
+         |          ^
+      12 |   }, 0);
+      13 | });
+      14 |"
+`;

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

@@ -11,3 +11,15 @@ exports[`prints useful error for environment methods after test is done 1`] = `
       13 | });
       14 |"
 `;
+
+exports[`prints useful error for environment methods after test is done 2`] = `
+"ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From __tests__/afterTeardown.test.js.
+
+       9 | test('access environment methods after done', () => {
+      10 |   setTimeout(() => {
+    > 11 |     jest.clearAllTimers();
+         |          ^
+      12 |   }, 0);
+      13 | });
+      14 |"
+`;

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

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`prints useful error for requires after test is done 1`] = `
+exports[`prints useful error for requires after test is done w/ \`waitNextEventLoopTurnForUnhandledRejectionEvents\` 1`] = `
 "    ReferenceError: You are trying to \`import\` a file outside of the scope of the test code.
 
        9 | test('require after done', () => {
@@ -11,3 +11,15 @@ exports[`prints useful error for requires after test is done 1`] = `
       13 |     expect(double(5)).toBe(10);
       14 |   }, 0);"
 `;
+
+exports[`prints useful error for requires after test is done w/o \`waitNextEventLoopTurnForUnhandledRejectionEvents\` 1`] = `
+"ReferenceError: You are trying to \`import\` a file after the Jest environment has been torn down. From __tests__/lateRequire.test.js.
+
+       9 | test('require after done', () => {
+      10 |   setTimeout(() => {
+    > 11 |     const double = require('../');
+         |                    ^
+      12 |
+      13 |     expect(double(5)).toBe(10);
+      14 |   }, 0);"
+`;

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

@@ -11,3 +11,15 @@ exports[`prints useful error for requires after test is done 1`] = `
       13 |     expect(double(5)).toBe(10);
       14 |   }, 0);"
 `;
+
+exports[`prints useful error for requires after test is done 2`] = `
+"ReferenceError: You are trying to \`import\` a file after the Jest environment has been torn down. From __tests__/lateRequire.test.js.
+
+       9 | test('require after done', () => {
+      10 |   setTimeout(() => {
+    > 11 |     const double = require('../');
+         |                    ^
+      12 |
+      13 |     expect(double(5)).toBe(10);
+      14 |   }, 0);"
+`;

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

@@ -91,6 +91,7 @@ exports[`--showConfig outputs config info and exits 1`] = `
         "/node_modules/",
         "<<REPLACED_PNP_PATH>>"
       ],
+      "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
       "watchPathIgnorePatterns": []
     }
   ],
@@ -143,6 +144,7 @@ exports[`--showConfig outputs config info and exits 1`] = `
     "testSequencer": "<<REPLACED_JEST_PACKAGES_DIR>>/jest-test-sequencer/build/index.js",
     "updateSnapshot": "none",
     "useStderr": false,
+    "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
     "watch": false,
     "watchAll": false,
     "watchman": true,

e2e/__tests__/environmentAfterTeardown.test.ts

@@ -10,8 +10,20 @@ import runJest from '../runJest';
 
 skipSuiteOnJasmine();
 
-test('prints useful error for environment methods after test is done', () => {
+test('prints useful error for environment methods after test is done w/o `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
   const {stderr} = runJest('environment-after-teardown');
+  const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
+
+  expect(interestingLines).toMatchSnapshot();
+  expect(stderr.split('\n')[9]).toBe(
+    'ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From __tests__/afterTeardown.test.js.',
+  );
+});
+
+test('prints useful error for environment methods after test is done w/ `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
+  const {stderr} = runJest('environment-after-teardown', [
+    '--waitNextEventLoopTurnForUnhandledRejectionEvents',
+  ]);
   const interestingLines = stderr.split('\n').slice(5, 14).join('\n');
 
   expect(interestingLines).toMatchSnapshot();

e2e/__tests__/environmentAfterTeardownJasmine.test.ts

@@ -10,12 +10,19 @@ import runJest from '../runJest';
 
 skipSuiteOnJestCircus();
 
-test('prints useful error for environment methods after test is done', () => {
-  const {stderr} = runJest('environment-after-teardown');
-  const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
+test.each`
+  jestArgs
+  ${[]}
+  ${['--waitNextEventLoopTurnForUnhandledRejectionEvents']}
+`(
+  'prints useful error for environment methods after test is done',
+  ({jestArgs}) => {
+    const {stderr} = runJest('environment-after-teardown', jestArgs);
+    const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
 
-  expect(interestingLines).toMatchSnapshot();
-  expect(stderr.split('\n')[9]).toBe(
-    'ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From __tests__/afterTeardown.test.js.',
-  );
-});
+    expect(interestingLines).toMatchSnapshot();
+    expect(stderr.split('\n')[9]).toBe(
+      'ReferenceError: You are trying to access a property or method of the Jest environment after it has been torn down. From __tests__/afterTeardown.test.js.',
+    );
+  },
+);

e2e/__tests__/fakeTimersLegacy.test.ts

@@ -39,11 +39,20 @@ describe('requestAnimationFrame', () => {
 });
 
 describe('setImmediate', () => {
-  test('fakes setImmediate', () => {
+  test('fakes setImmediate w/o `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
+    const result = runJest('fake-timers-legacy/set-immediate');
+
+    expect(result.stderr).toMatch('setImmediate test');
+    expect(result.exitCode).toBe(0);
+  });
+
+  test('fakes setImmediate w/ `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
     // Jasmine runner does not handle unhandled promise rejections that are causing the test to fail in Jest circus
     const expectedExitCode = isJestJasmineRun() ? 0 : 1;
 
-    const result = runJest('fake-timers-legacy/set-immediate');
+    const result = runJest('fake-timers-legacy/set-immediate', [
+      '--waitNextEventLoopTurnForUnhandledRejectionEvents',
+    ]);
 
     expect(result.stderr).toMatch('setImmediate test');
     expect(result.exitCode).toBe(expectedExitCode);

e2e/__tests__/requireAfterTeardown.test.ts

@@ -10,9 +10,22 @@ import runJest from '../runJest';
 
 skipSuiteOnJasmine();
 
-test('prints useful error for requires after test is done', () => {
+test('prints useful error for requires after test is done w/o `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
   const {stderr} = runJest('require-after-teardown');
 
+  const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
+
+  expect(interestingLines).toMatchSnapshot();
+  expect(stderr.split('\n')[19]).toMatch(
+    '(__tests__/lateRequire.test.js:11:20)',
+  );
+});
+
+test('prints useful error for requires after test is done w/ `waitNextEventLoopTurnForUnhandledRejectionEvents`', () => {
+  const {stderr} = runJest('require-after-teardown', [
+    '--waitNextEventLoopTurnForUnhandledRejectionEvents',
+  ]);
+
   const interestingLines = stderr.split('\n').slice(5, 14).join('\n');
 
   expect(interestingLines).toMatchSnapshot();

e2e/__tests__/requireAfterTeardownJasmine.test.ts

@@ -10,8 +10,12 @@ import runJest from '../runJest';
 
 skipSuiteOnJestCircus();
 
-test('prints useful error for requires after test is done', () => {
-  const {stderr} = runJest('require-after-teardown');
+test.each`
+  jestArgs
+  ${[]}
+  ${['--waitNextEventLoopTurnForUnhandledRejectionEvents']}
+`('prints useful error for requires after test is done', ({jestArgs}) => {
+  const {stderr} = runJest('require-after-teardown', jestArgs);
 
   const interestingLines = stderr.split('\n').slice(9, 18).join('\n');
 

e2e/promise-async-handling/package.json

@@ -1,5 +1,6 @@
 {
   "jest": {
-    "testEnvironment": "node"
+    "testEnvironment": "node",
+    "waitNextEventLoopTurnForUnhandledRejectionEvents": true
   }
 }

packages/jest-circus/src/legacy-code-todo-rewrite/jestAdapterInit.ts

@@ -132,7 +132,12 @@ export const initialize = async ({
     addEventHandler(testCaseReportHandler(testPath, sendMessageToJest));
   }
 
-  addEventHandler(unhandledRejectionHandler(runtime));
+  addEventHandler(
+    unhandledRejectionHandler(
+      runtime,
+      globalConfig.waitNextEventLoopTurnForUnhandledRejectionEvents,
+    ),
+  );
 
   // Return it back to the outer scope (test runner outside the VM).
   return {globals: globalsObject, snapshotState};

packages/jest-circus/src/unhandledRejectionHandler.ts

@@ -22,6 +22,7 @@ const untilNextEventLoopTurn = async () => {
 
 export const unhandledRejectionHandler = (
   runtime: Runtime,
+  waitNextEventLoopTurnForUnhandledRejectionEvents: boolean,
 ): Circus.EventHandler => {
   return async (event, state) => {
     if (event.name === 'hook_start') {
@@ -29,8 +30,10 @@ export const unhandledRejectionHandler = (
     } else if (event.name === 'hook_success' || event.name === 'hook_failure') {
       runtime.leaveTestCode();
 
-      // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
-      await untilNextEventLoopTurn();
+      if (waitNextEventLoopTurnForUnhandledRejectionEvents) {
+        // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
+        await untilNextEventLoopTurn();
+      }
 
       const {test, describeBlock, hook} = event;
       const {asyncError, type} = hook;
@@ -60,8 +63,10 @@ export const unhandledRejectionHandler = (
     ) {
       runtime.leaveTestCode();
 
-      // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
-      await untilNextEventLoopTurn();
+      if (waitNextEventLoopTurnForUnhandledRejectionEvents) {
+        // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
+        await untilNextEventLoopTurn();
+      }
 
       const {test} = event;
       invariant(test, 'always present for `*Each` hooks');
@@ -70,8 +75,10 @@ export const unhandledRejectionHandler = (
         test.errors.push([error, event.test.asyncError]);
       }
     } else if (event.name === 'teardown') {
-      // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
-      await untilNextEventLoopTurn();
+      if (waitNextEventLoopTurnForUnhandledRejectionEvents) {
+        // We need to give event loop the time to actually execute `rejectionHandled`, `uncaughtException` or `unhandledRejection` events
+        await untilNextEventLoopTurn();
+      }
 
       state.unhandledErrors.push(
         ...state.unhandledRejectionErrorByPromise.values(),

packages/jest-cli/src/args.ts

@@ -686,6 +686,12 @@ export const options: {[key: string]: Options} = {
       'Display individual test results with the test suite hierarchy.',
     type: 'boolean',
   },
+  waitNextEventLoopTurnForUnhandledRejectionEvents: {
+    description:
+      'Gives one event loop turn to handle `rejectionHandled`, ' +
+      '`uncaughtException` or `unhandledRejection`.',
+    type: 'boolean',
+  },
   watch: {
     description:
       'Watch files for changes and rerun tests related to ' +

packages/jest-config/src/Defaults.ts

@@ -91,6 +91,7 @@ const defaultOptions: Config.DefaultOptions = {
   testSequencer: '@jest/test-sequencer',
   transformIgnorePatterns: [NODE_MODULES_REGEXP, `\\.pnp\\.[^\\${sep}]+$`],
   useStderr: false,
+  waitNextEventLoopTurnForUnhandledRejectionEvents: false,
   watch: false,
   watchPathIgnorePatterns: [],
   watchman: true,

packages/jest-config/src/ValidConfig.ts

@@ -181,6 +181,7 @@ export const initialOptions: Config.InitialOptions = {
   updateSnapshot: true,
   useStderr: false,
   verbose: false,
+  waitNextEventLoopTurnForUnhandledRejectionEvents: false,
   watch: false,
   watchAll: false,
   watchPathIgnorePatterns: ['<rootDir>/e2e/'],
@@ -320,6 +321,7 @@ export const initialProjectOptions: Config.InitialProjectOptions = {
   },
   transformIgnorePatterns: [NODE_MODULES_REGEXP],
   unmockedModulePathPatterns: ['mock'],
+  waitNextEventLoopTurnForUnhandledRejectionEvents: false,
   watchPathIgnorePatterns: ['<rootDir>/e2e/'],
   workerIdleMemoryLimit: multipleValidOptions(0.2, '50%'),
 };

packages/jest-config/src/index.ts

@@ -138,6 +138,8 @@ const groupOptions = (
     updateSnapshot: options.updateSnapshot,
     useStderr: options.useStderr,
     verbose: options.verbose,
+    waitNextEventLoopTurnForUnhandledRejectionEvents:
+      options.waitNextEventLoopTurnForUnhandledRejectionEvents,
     watch: options.watch,
     watchAll: options.watchAll,
     watchPlugins: options.watchPlugins,
@@ -203,6 +205,8 @@ const groupOptions = (
     transform: options.transform,
     transformIgnorePatterns: options.transformIgnorePatterns,
     unmockedModulePathPatterns: options.unmockedModulePathPatterns,
+    waitNextEventLoopTurnForUnhandledRejectionEvents:
+      options.waitNextEventLoopTurnForUnhandledRejectionEvents,
     watchPathIgnorePatterns: options.watchPathIgnorePatterns,
   }),
 });

packages/jest-config/src/normalize.ts

@@ -933,6 +933,7 @@ export default async function normalize(
       case 'testNamePattern':
       case 'useStderr':
       case 'verbose':
+      case 'waitNextEventLoopTurnForUnhandledRejectionEvents':
       case 'watch':
       case 'watchAll':
       case 'watchman':

packages/jest-core/src/lib/__tests__/__snapshots__/logDebugMessages.test.ts.snap

@@ -63,6 +63,7 @@ exports[`prints the config object 1`] = `
     "testRunner": "myRunner",
     "transform": [],
     "transformIgnorePatterns": [],
+    "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
     "watchPathIgnorePatterns": []
   },
   "globalConfig": {
@@ -115,6 +116,7 @@ exports[`prints the config object 1`] = `
     "updateSnapshot": "none",
     "useStderr": false,
     "verbose": false,
+    "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
     "watch": true,
     "watchAll": false,
     "watchPlugins": [],

packages/jest-transform/src/__tests__/__snapshots__/ScriptTransformer.test.ts.snap

@@ -97,9 +97,10 @@ exports[`ScriptTransformer in async mode, passes expected transform options to g
             "/node_modules/",
           ],
           "unmockedModulePathPatterns": undefined,
+          "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
           "watchPathIgnorePatterns": Array [],
         },
-        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]}",
+        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]}",
         "coverageProvider": "babel",
         "instrument": true,
         "supportsDynamicImport": false,
@@ -125,7 +126,7 @@ exports[`ScriptTransformer in async mode, uses the supplied async preprocessor 1
 "const TRANSFORMED = {
   filename: '/fruits/banana.js',
   script: 'module.exports = "banana";',
-  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_async_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
+  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_async_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"waitNextEventLoopTurnForUnhandledRejectionEvents\\":false,\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
 };"
 `;
 
@@ -135,7 +136,7 @@ exports[`ScriptTransformer in async mode, uses the supplied preprocessor 1`] = `
 "const TRANSFORMED = {
   filename: '/fruits/banana.js',
   script: 'module.exports = "banana";',
-  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
+  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"waitNextEventLoopTurnForUnhandledRejectionEvents\\":false,\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
 };"
 `;
 
@@ -235,9 +236,10 @@ exports[`ScriptTransformer passes expected transform options to getCacheKey 1`]
             "/node_modules/",
           ],
           "unmockedModulePathPatterns": undefined,
+          "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
           "watchPathIgnorePatterns": Array [],
         },
-        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]}",
+        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]}",
         "coverageProvider": "babel",
         "instrument": true,
         "supportsDynamicImport": false,
@@ -347,9 +349,10 @@ exports[`ScriptTransformer passes expected transform options to getCacheKeyAsync
             "/node_modules/",
           ],
           "unmockedModulePathPatterns": undefined,
+          "waitNextEventLoopTurnForUnhandledRejectionEvents": false,
           "watchPathIgnorePatterns": Array [],
         },
-        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]}",
+        "configString": "{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{"configKey":"configValue"}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]}",
         "coverageProvider": "babel",
         "instrument": true,
         "supportsDynamicImport": false,
@@ -787,7 +790,7 @@ exports[`ScriptTransformer uses mixture of sync/async preprocessors 1`] = `
 "const TRANSFORMED = {
   filename: '/fruits/banana.js',
   script: 'module.exports = "banana";',
-  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{}],["\\\\.css$","css-preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_async_preprocessor\\",{}],[\\"\\\\\\\\.css$\\",\\"css-preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
+  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_async_preprocessor",{}],["\\\\.css$","css-preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_async_preprocessor\\",{}],[\\"\\\\\\\\.css$\\",\\"css-preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"waitNextEventLoopTurnForUnhandledRejectionEvents\\":false,\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
 };"
 `;
 
@@ -804,7 +807,7 @@ exports[`ScriptTransformer uses multiple preprocessors 1`] = `
 "const TRANSFORMED = {
   filename: '/fruits/banana.js',
   script: 'module.exports = "banana";',
-  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}],["\\\\.css$","css-preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}],[\\"\\\\\\\\.css$\\",\\"css-preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
+  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}],["\\\\.css$","css-preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}],[\\"\\\\\\\\.css$\\",\\"css-preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"waitNextEventLoopTurnForUnhandledRejectionEvents\\":false,\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
 };"
 `;
 
@@ -821,7 +824,7 @@ exports[`ScriptTransformer uses the supplied preprocessor 1`] = `
 "const TRANSFORMED = {
   filename: '/fruits/banana.js',
   script: 'module.exports = "banana";',
-  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
+  config: '{"collectCoverage":false,"collectCoverageFrom":[],"coverageProvider":"babel","supportsDynamicImport":false,"supportsExportNamespaceFrom":false,"supportsStaticESM":false,"supportsTopLevelAwait":false,"instrument":false,"cacheFS":{},"config":{"automock":false,"cache":true,"cacheDirectory":"/cache/","clearMocks":false,"collectCoverageFrom":["src","!public"],"coverageDirectory":"coverage","coveragePathIgnorePatterns":[],"cwd":"/test_root_dir/","detectLeaks":false,"detectOpenHandles":false,"errorOnDeprecated":false,"extensionsToTreatAsEsm":[],"fakeTimers":{"enableGlobally":false},"forceCoverageMatch":[],"globals":{},"haste":{},"id":"test","injectGlobals":true,"moduleDirectories":[],"moduleFileExtensions":["js"],"moduleNameMapper":[],"modulePathIgnorePatterns":[],"modulePaths":[],"openHandlesTimeout":1000,"prettierPath":"prettier","resetMocks":false,"resetModules":false,"restoreMocks":false,"rootDir":"/","roots":[],"runner":"jest-runner","runtime":"/test_module_loader_path","sandboxInjectedGlobals":[],"setupFiles":[],"setupFilesAfterEnv":[],"skipFilter":false,"skipNodeResolution":false,"slowTestThreshold":5,"snapshotFormat":{},"snapshotSerializers":[],"testEnvironment":"node","testEnvironmentOptions":{},"testLocationInResults":false,"testMatch":[],"testPathIgnorePatterns":[],"testRegex":["\\\\.test\\\\.js$"],"testRunner":"jest-circus/runner","transform":[["\\\\.js$","test_preprocessor",{}]],"transformIgnorePatterns":["/node_modules/"],"waitNextEventLoopTurnForUnhandledRejectionEvents":false,"watchPathIgnorePatterns":[]},"configString":"{\\"automock\\":false,\\"cache\\":true,\\"cacheDirectory\\":\\"/cache/\\",\\"clearMocks\\":false,\\"collectCoverageFrom\\":[\\"src\\",\\"!public\\"],\\"coverageDirectory\\":\\"coverage\\",\\"coveragePathIgnorePatterns\\":[],\\"cwd\\":\\"/test_root_dir/\\",\\"detectLeaks\\":false,\\"detectOpenHandles\\":false,\\"errorOnDeprecated\\":false,\\"extensionsToTreatAsEsm\\":[],\\"fakeTimers\\":{\\"enableGlobally\\":false},\\"forceCoverageMatch\\":[],\\"globals\\":{},\\"haste\\":{},\\"id\\":\\"test\\",\\"injectGlobals\\":true,\\"moduleDirectories\\":[],\\"moduleFileExtensions\\":[\\"js\\"],\\"moduleNameMapper\\":[],\\"modulePathIgnorePatterns\\":[],\\"modulePaths\\":[],\\"openHandlesTimeout\\":1000,\\"prettierPath\\":\\"prettier\\",\\"resetMocks\\":false,\\"resetModules\\":false,\\"restoreMocks\\":false,\\"rootDir\\":\\"/\\",\\"roots\\":[],\\"runner\\":\\"jest-runner\\",\\"runtime\\":\\"/test_module_loader_path\\",\\"sandboxInjectedGlobals\\":[],\\"setupFiles\\":[],\\"setupFilesAfterEnv\\":[],\\"skipFilter\\":false,\\"skipNodeResolution\\":false,\\"slowTestThreshold\\":5,\\"snapshotFormat\\":{},\\"snapshotSerializers\\":[],\\"testEnvironment\\":\\"node\\",\\"testEnvironmentOptions\\":{},\\"testLocationInResults\\":false,\\"testMatch\\":[],\\"testPathIgnorePatterns\\":[],\\"testRegex\\":[\\"\\\\\\\\.test\\\\\\\\.js$\\"],\\"testRunner\\":\\"jest-circus/runner\\",\\"transform\\":[[\\"\\\\\\\\.js$\\",\\"test_preprocessor\\",{}]],\\"transformIgnorePatterns\\":[\\"/node_modules/\\"],\\"waitNextEventLoopTurnForUnhandledRejectionEvents\\":false,\\"watchPathIgnorePatterns\\":[]}","transformerConfig":{}}',
 };"
 `;
 

packages/jest-types/src/Config.ts

@@ -204,6 +204,7 @@ export type DefaultOptions = {
   testSequencer: string;
   transformIgnorePatterns: Array<string>;
   useStderr: boolean;
+  waitNextEventLoopTurnForUnhandledRejectionEvents: boolean;
   watch: boolean;
   watchPathIgnorePatterns: Array<string>;
   watchman: boolean;
@@ -325,6 +326,7 @@ export type InitialOptions = Partial<{
   updateSnapshot: boolean;
   useStderr: boolean;
   verbose?: boolean;
+  waitNextEventLoopTurnForUnhandledRejectionEvents: boolean;
   watch: boolean;
   watchAll: boolean;
   watchman: boolean;
@@ -419,6 +421,7 @@ export type GlobalConfig = {
   updateSnapshot: SnapshotUpdateState;
   useStderr: boolean;
   verbose?: boolean;
+  waitNextEventLoopTurnForUnhandledRejectionEvents: boolean;
   watch: boolean;
   watchAll: boolean;
   watchman: boolean;
@@ -491,6 +494,7 @@ export type ProjectConfig = {
   transformIgnorePatterns: Array<string>;
   watchPathIgnorePatterns: Array<string>;
   unmockedModulePathPatterns?: Array<string>;
+  waitNextEventLoopTurnForUnhandledRejectionEvents: boolean;
   workerIdleMemoryLimit?: number;
 };
 

packages/test-utils/src/config.ts

@@ -62,6 +62,7 @@ const DEFAULT_GLOBAL_CONFIG: Config.GlobalConfig = {
   updateSnapshot: 'none',
   useStderr: false,
   verbose: false,
+  waitNextEventLoopTurnForUnhandledRejectionEvents: false,
   watch: false,
   watchAll: false,
   watchPlugins: [],
@@ -125,6 +126,7 @@ const DEFAULT_PROJECT_CONFIG: Config.ProjectConfig = {
   transform: [],
   transformIgnorePatterns: [],
   unmockedModulePathPatterns: undefined,
+  waitNextEventLoopTurnForUnhandledRejectionEvents: false,
   watchPathIgnorePatterns: [],
 };