@jest/core

Features

• : Improve report when matcher fails, part 13

• @jest/core: Filter API pre-filter setup hook

• jest-snapshot: Improve report when matcher fails, part 14

• @jest/reporter: Display todo and skip test descriptions when verbose is true

• jest-runner: Support default exports for test environments

• pretty-format: Support React.Suspense

• jest-snapshot: Indent inline snapshots

• jest-config: Support colors in displayName configuration

Fixes

• jest-circus: Fix test retries with beforeAll/beforeEach failures

• expect: Fix circular references in iterable equality

• jest-changed-files: Change method of obtaining git root

• jest-each: Fix test function type

• jest-fake-timers: getTimerCount not taking immediates and ticks into account

• jest-runtime: Allow json file as manual mock

• pretty-format: Print BigInt as a readable number instead of {}

• jest-core: Fix ability to transform dependencies required from globalSetup script

• @jest/reporters: Fix Cannot read property converageData of null

• jest-worker: JEST_WORKER_ID starts at 1

• jest-config: Use default cwd even if config contains a cwd property

• : Remove internal peer dependencies

• : Remove internal peer dependencies

• : Remove internal peer dependencies

• jest-resolve: Fix requireActual with moduleNameMapper

• jest-haste-map: Fix haste map duplicate detection in watch mode

Performance

• jest-haste-map: Optimize haste map data structure for serialization/deserialization

• jest-haste-map: Avoid persisting haste map or processing files when not changed

• jest-core: Improve performance of SearchSource.findMatchingTests by 15%

• jest-resolve: Optimize internal cache lookup performance

• jest-core: Dramatically improve watch mode performance

• jest-transform: Cache regular expression instead of creating anew for every file in ScriptTransformer

• jest-core: Fix memory leak of source map info and minor performance improvements

• jest-console: Fix memory leak by releasing console output reference when printed to stdout

• jest-runtime: Use Map instead of Object for module registry