@jest/core

Features

• breaking

  jest-environment-jsdom: Upgrade jsdom to v16

• @jest/fake-timers: Add possibility to use a modern implementation of fake timers, backed by @sinonjs/fake-timers

• jest-runtime: Add createMockFromModule as an alias for genMockFromModule

Fixes

• babel-jest: Handle null being passed to createTransformer

• [jest-circus, jest-console, jest-jasmine2, jest-reporters, jest-util, pretty-format] Fix time durating formatting and consolidate time formatting code

• breaking

  jest-circus: Fail tests if a test takes a done callback and have return values

• breaking

  jest-circus: Throw a proper error if a test / hook is defined asynchronously

• jest-circus: Throw more descriptive error if hook is defined inside test

• breaking

  jest-circus: Align execution order of tests to match jasmine's top to bottom order

• breaking

  jest-config, jest-resolve: Remove support for browser field

• jest-haste-map: Stop reporting files as changed when they are only accessed

• jest-resolve: Show relative path from root dir for module not found errors

• jest-runtime: Fix absolute path moduleNameMapper + jest.mock bug

Chore & Maintenance

• breaking

  *: TypeScript definitions requires a minimum of TypeScript v3.8

• breaking

  *: Drop support for Node 8

• breaking

  expect, jest-mock, pretty-format: Remove build-es5 from package

• breaking

  @jest/fake-timers, @jest/environment: Rename LolexFakeTimers to ModernFakeTimers

• breaking

  jest-haste-map: Removed providesModuleNodeModules

• breaking

  jest-runtime: Remove long-deprecated require.requireActual and require.requireMock methods