Packages

@jest/core

30.5.2 · 18 Sep 2026MIT60.2M / weekRepositoryHomepagenpmAtom feed

Upgrading @jest/core From 27.2.1 to 27.5.1

16 releases in betweenevery note read

Other targets from 27.2.1Latest30.5.2
  1. 27.2.1yours
  2. 9 releases
  3. 27.4.3breaking
  4. 5 releases
  5. 27.5.1target

Before you upgrade

Tick each one off as you go
  • breaking27.4.3
  • deprecated27.2.5

Release by release

  1. 27.5.1

    8 Feb 20223 new · 3 fixes
    • new

      jest-config: Support comments in JSON config file

    • new

      pretty-format: Expose ConvertAnsi plugin

    • new

      expect: Add type definitions for asymmetric closeTo matcher

    • fixed

      jest-cli: Load binary via exported API

    • fixed

      jest-config: Replace jsonlint with parse-json

    • fixed

      jest-repl: Make module importable (#12311 & #12315)

  2. 27.5.0

    5 Feb 20226 new · 3 fixes
    • new

      expect: Add asymmetric matcher expect.closeTo

    • new

      jest-mock: Added mockFn.mock.lastCall to retrieve last argument

    • new

      expect: Add a fix for .toHaveProperty('')

    • new

      @jest/globals: Add missing options argument to jest.doMock typing

  3. 27.4.7

    5 Jan 20221 fix
  4. 27.4.6

    4 Jan 20223 new · 1 fix
    • new

      jest-environment-node: Add AbortSignal

    • new

      jest-environment-node: Add Missing node global performance

    • new

      jest-config perf: only register ts-node once when loading TS config files

    • fixed

      jest-runtime: Handle missing mocked property

  5. 27.4.5

    13 Dec 20211 fix
    • fixed

      jest-worker: Stop explicitly passing process.env

  6. 27.4.4

    10 Dec 20212 new · 1 fix
    • new

      babel-jest: Add process.version chunk to the cache key

    • new

      jest-environment: Add mocked to jest object

    • fixed

      jest-worker: Stop explicitly passing execArgv

  7. 27.4.3

    Migration needed1 Dec 2021
    • breaking

      jest-environment-jsdom: Remove @types/jsdom dependency (and make its dom property private)

  8. 27.4.2

    30 Nov 20211 new
    • new

      jest-worker: Add additional execArgv to filter

12 internal lines (docs, tests, tooling) left out.