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npm · #1130 most downloaded on npm
Last release 5 days ago
18 Sep 2026
Release timing varies
gaps range from 8 days to 5 months
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
10 years old
335 releases · first in 2016
Fixed issues with test paths that include hyphens on Windows.
testEnvironment resolution.Pretty printer updates for React and global window objects.
jest-runtime overwrites automocking from configuration files.One column per quarter.
Updated toThrow and toThrowMatchers and aliased them to the same matcher.
--bail option.See https://jestjs.io/blog/2016/09/01/jest-15.html
.spec.js and .test.js as test files.--env option to override the default test environment.--watchAll, made --watch interactive and added the ability to update snapshots and select test patterns in watch mode.testEnvironment resolution to prefer jest-environment-{name} instead of {name} only. This prevents a module colision when using jsdom as test environment.moduleNameMapper now uses a resolution algorithm.global.global to the node environment.mock.collectCoverageFrom to collect code coverage from untested files.Nothing published for this version
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Changed Jest's default cache directory.
jest-react-native for react 15.3.0.react-test-renderer.babel-jest can now be used to compose a transformer.
babel-jest can now be used to compose a transformer.jest -u or npm test -- -u.config cli option to enable JSON objects as configuration.Official release of snapshot tests.
toBe, toBeFalsy, toBeTruthy, toBeNaN, toBe{Greater,Less}Than{,OrEqual}, toBeNull, toBeDefined, toBeUndefined, toContain, toMatch, toBeCloseTo were rewritten.Nothing published for this version
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- Snapshot bugfixes. - Timer bugfixes.
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Added test global function as an alias for it.
test global function as an alias for it.coveragePathIgnorePatterns to the config.--verbose option and top level it calls.require('jest-check').jest.deepUnmock.Added duration of individual tests in verbose mode.
browser config option to properly resolve npm packages with a browser field in package.json if you are writing tests for client side appsjest-repl.jest-cli into jest-runtime and jest-config.--notify.TestRunner into SearchSource and improved the "no tests found" message.jest.isMockFunction(jest.fn()) to test for mock functions.jest.mock('Module', implementation, {virtual: true}).toMatchSnapshot().Nothing published for this version
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