jest-util

Features

• expect, @jest/expect: Support type inference for function parameters in CalledWith assertions

• expect, @jest/expect: Infer type of *ReturnedWith matchers argument

• @jest/environment, jest-runtime: Allow jest.requireActual and jest.requireMock to take a type argument

• @jest/environment: Allow jest.mock and jest.doMock to take a type argument

• @jest/fake-timers: Add jest.now() to return the current fake clock time (#13244, #13246)

• @jest/mock: Add withImplementation method for temporarily overriding a mock

• expect: Export toThrow* matchers

Fixes

• jest-circus, jest-jasmine2: Fix error messages for Node's assert.throes

• jest-haste-map: Remove __proto__ usage

• jest-mock: Improve spyOn typings to handle optional properties

• jest-mock: Fix mocking of getters and setters on classes

• jest-snapshot: Throw useful error when an array is passed as property matchers

• jest-snapshot: Prioritize parser used in the project

• jest-transform: Attempt to work around issues with atomic writes on Windows