@jest/fake-timers

Features

• expect, @jest/expect-utils: Support custom equality testers

• jest-config, jest-worker: Use os.availableParallelism if available to calculate number of workers to spawn

• @jest/globals, jest-mock: Add jest.replaceProperty() that replaces property value

• jest-haste-map: Ignore Sapling vcs directories (.sl/)

• jest-resolve: Support subpath imports (#13705, #13723, #13777)

• jest-runtime: Add jest.isolateModulesAsync for scoped module initialization of asynchronous functions

• jest-runtime: Add jest.isEnvironmentTornDown function

• jest-test-result: Added skipped and focused status to FormattedTestResult

• jest-transform: Support for asynchronous createTransformer

Fixes

• jest-environment-node: Fix non-configurable globals

• @jest/expect-utils: toMatchObject should handle Symbol properties

• jest-mock: Fix mockReset and resetAllMocks undefined return value

• jest-resolve: Add global paths to require.resolve.paths

• jest-resolve: Correct node core module detection when using node: specifiers

• jest-runtime: Support WASM files that import JS resources

• jest-runtime: Use the scriptTransformer cache in jest-runner

• jest-runtime: Enforce import assertions when importing JSON in ESM (#12755 & #13805)

• jest-snapshot: Make sure to import babel outside of the sandbox

• jest-transform: Ensure the correct configuration is passed to preprocessors specified multiple times in the transform option