expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:6375) ExperimentalWarning: CommonJS module /home/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /home/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:7269) ExperimentalWarning: CommonJS module /home/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /home/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:11402) ExperimentalWarning: CommonJS module /home/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /home/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Ubuntu with shard 3/4 / Node v23.x

Final attempt failed. Child_process exited with error code 1

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:12998) ExperimentalWarning: CommonJS module /Users/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /Users/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:14320) ExperimentalWarning: CommonJS module /Users/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /Users/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:25130) ExperimentalWarning: CommonJS module /Users/runner/work/jest/jest/packages/jest-util/build/index.js is loading ES Module /Users/runner/work/jest/jest/jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

macOS with shard 2/3 / Node v23.x

Final attempt failed. Child_process exited with error code 1

notify › does not report --notify flag: e2e/__tests__/detectOpenHandles.ts#L111

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "Jest did not exit one second after the test run has completed.· 'This usually means that there are asynchronous operations that weren't stopped in your tests. Consider running Jest with `--detectOpenHandles` to troubleshoot this issue." at Object.toBe (e2e/__tests__/detectOpenHandles.ts:111:27)

does not trigger unexpected token error message for regular syntax errors: e2e/Utils.ts#L107

EBUSY: resource busy or locked, rmdir 'C:\Users\RUNNER~1\AppData\Local\Temp\unexpected-token' at rmSync (e2e/Utils.ts:107:8) at Object.<anonymous> (e2e/__tests__/unexpectedToken.test.ts:16:24)

globalSetup works with ESM modules: e2e/__tests__/globalSetup.test.ts#L202

expect(received).toBe(expected) // Object.is equality Expected: 0 Received: 1 at Object.toBe (e2e/__tests__/globalSetup.test.ts:202:20)

collects coverage only from specified files avoiding dependencies: e2e/__tests__/coverageReport.test.ts#L84

expect(received).toMatchSnapshot() Snapshot name: `collects coverage only from specified files avoiding dependencies 1` - Snapshot - 6 + Received + 0 - ----------|---------|----------|---------|---------|------------------- - File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s - ----------|---------|----------|---------|---------|------------------- - All files | 87.5 | 100 | 50 | 100 | - sum.js | 87.5 | 100 | 50 | 100 | - ----------|---------|----------|---------|---------|------------------- at Object.toMatchSnapshot (e2e/__tests__/coverageReport.test.ts:84:18)

can press "p" to filter by file name: e2e/__tests__/watchModePatterns.test.ts#L51

expect(received).toMatchSnapshot(hint) Snapshot name: `can press "p" to filter by file name: test results 1` - Snapshot - 0 + Received + 1 PASS __tests__/bar.spec.js PASS __tests__/foo.spec.js + A worker process has failed to exit gracefully and has been force exited. This is likely caused by tests leaking due to improper teardown. Try running with --detectOpenHandles to find leaks. Active timers can also cause this, ensure that .unref() was called on them. at Object.toMatchSnapshot (e2e/__tests__/watchModePatterns.test.ts:51:18)

collects coverage only from multiple specified files: e2e/__tests__/coverageReport.test.ts#L66

expect(received).toMatchSnapshot() Snapshot name: `collects coverage only from multiple specified files 1` - Snapshot - 7 + Received + 0 - --------------|---------|----------|---------|---------|------------------- - File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s - --------------|---------|----------|---------|---------|------------------- - All files | 100 | 100 | 100 | 100 | - file.js | 100 | 100 | 100 | 100 | - otherFile.js | 100 | 100 | 100 | 100 | - --------------|---------|----------|---------|---------|------------------- at Object.toMatchSnapshot (e2e/__tests__/coverageReport.test.ts:66:18)

collects coverage from duplicate files avoiding shared cache: e2e/__tests__/coverageReport.test.ts#L180

expect(received).toBe(expected) // Object.is equality Expected: 0 Received: 1 at Object.toBe (e2e/__tests__/coverageReport.test.ts:180:20)

collects coverage from duplicate files avoiding shared cache: e2e/__tests__/coverageReport.test.ts#L179

expect(received).toMatchSnapshot() Snapshot name: `collects coverage from duplicate files avoiding shared cache 1` - Snapshot - 9 + Received + 0 - ---------------|---------|----------|---------|---------|------------------- - File | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s - ---------------|---------|----------|---------|---------|------------------- - All files | 100 | 100 | 100 | 100 | - a | 100 | 100 | 100 | 100 | - identical.js | 100 | 100 | 100 | 100 | - b | 100 | 100 | 100 | 100 | - identical.js | 100 | 100 | 100 | 100 | - ---------------|---------|----------|---------|---------|------------------- at Object.toMatchSnapshot (e2e/__tests__/coverageReport.test.ts:179:18)

handles a bad revision for "changedSince": e2e/Utils.ts#L107

EPERM, Permission denied: \\?\C:\Users\RUNNER~1\AppData\Local\Temp\jest-changed-files-test-dir '\\?\C:\Users\RUNNER~1\AppData\Local\Temp\jest-changed-files-test-dir' at rmSync (e2e/Utils.ts:107:8) at Object.<anonymous> (e2e/__tests__/jestChangedFiles.test.ts:61:25)

handles a bad revision for "changedSince": e2e/Utils.ts#L107

gets changed files for hg: e2e/Utils.ts#L107

monitors only root paths for hg: e2e/Utils.ts#L107

handles a bad revision for "changedSince": e2e/Utils.ts#L107

processChild › handles `Symbol`: e2e/__tests__/nonSerializableStructuresInequality.test.ts#L36

Process exited at waitUntil (e2e/__tests__/nonSerializableStructuresInequality.test.ts:36:9) at Object.testIn2Workers (e2e/__tests__/nonSerializableStructuresInequality.test.ts:98:35)

processChild › handles `Symbol`: undefined#L1

Timed out at timeoutKill (node_modules/execa/lib/kill.js:65:23)

processChild › handles `Symbol`: undefined#L1

Timed out at timeoutKill (node_modules/execa/lib/kill.js:65:23)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:7832) ExperimentalWarning: CommonJS module D:\\a\\jest\\jest\\packages\\jest-util\\build\\index.js is loading ES Module D:\\a\\jest\\jest\\jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:1292) ExperimentalWarning: CommonJS module D:\\a\\jest\\jest\\packages\\jest-util\\build\\index.js is loading ES Module D:\\a\\jest\\jest\\jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Repl › cli › runs without errors: undefined#L1

expect(received).toBe(expected) // Object.is equality Expected: "" Received: "(node:4732) ExperimentalWarning: CommonJS module D:\\a\\jest\\jest\\packages\\jest-util\\build\\index.js is loading ES Module D:\\a\\jest\\jest\\jest.config.mjs using require(). Support for loading ES Module in require() is an experimental feature and might change at any time (Use `node --trace-warnings ...` to show where the warning was created)" at Object.toBe (packages/jest-repl/src/__tests__/jest_repl.test.js:31:36)

Windows with shard 3/4 / Node v23.x

Final attempt failed. Child_process exited with error code 1

prepare-yarn-cache-ubuntu / Prepare yarn cache for ubuntu-latest

ubuntu-latest pipelines will use ubuntu-24.04 soon. For more details, see https://github.com/actions/runner-images/issues/10636

Validate Yarn dependencies and constraints

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Node LTS on Ubuntu with leak detection

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Lint

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Ubuntu with shard 1/4 / Node v23.x

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Ubuntu with shard 1/4 / Node v20.x

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Ubuntu with shard 1/4 / Node v18.x

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Ubuntu with shard 1/4 / Node v22.x

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Node LTS on Ubuntu with coverage (1/4)

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Ubuntu with shard 1/4 / Node LTS using jest-jasmine2

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Node LTS on Ubuntu with coverage (4/4)

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Ubuntu with shard 1/4 / Node v16.x

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Node LTS on Ubuntu with coverage (3/4)

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Node LTS on Ubuntu with coverage (2/4)

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Ubuntu with shard 2/4 / Node v16.x

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Ubuntu with shard 2/4 / Node v23.x

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Ubuntu with shard 2/4 / Node v18.x

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Ubuntu with shard 2/4 / Node v22.x

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Ubuntu with shard 2/4 / Node v20.x

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Typecheck Examples and Tests

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Ubuntu with shard 4/4 / Node LTS using jest-jasmine2

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Ubuntu with shard 3/4 / Node LTS using jest-jasmine2

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Ubuntu with shard 2/4 / Node LTS using jest-jasmine2

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Ubuntu with shard 3/4 / Node v20.x

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Ubuntu with shard 3/4 / Node v22.x

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Ubuntu with shard 3/4 / Node v18.x

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Ubuntu with shard 3/4 / Node v16.x

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Ubuntu with shard 4/4 / Node v16.x

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Ubuntu with shard 4/4 / Node v18.x

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TypeScript Compatibility

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Ubuntu with shard 4/4 / Node v22.x

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Ubuntu with shard 4/4 / Node v23.x

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Ubuntu with shard 4/4 / Node v20.x

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Ubuntu with shard 3/4 / Node v23.x

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Ubuntu with shard 3/4 / Node v23.x