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npm · #862 most downloaded on npm
> Babel preset for all Jest plugins. This preset is automatically included when using [babel-jest](https://github.com/jestjs/jest/tree/main/packages/babel-jest).
Last release 1 months ago
28 Aug 2026
Ships fairly regularly
a new release about every 3 months
Nearly every release is documented
notes for 55 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
11 years old
202 releases · first in 2016
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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().One column per quarter.
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Added testRegex to match for tests outside of specific folders. Deprecated both testDirectoryName and testFileExtensions.
jest package on npm.testRegex to match for tests outside of specific folders. Deprecated both testDirectoryName and testFileExtensions.it can now return a Promise for async testing. pit was deprecated.jest-resolve as a standalone package based on the Facebook module resolution algorithm.jest-changed-files as a standalone package to detect changed files in a git or hg repo.--setupTestFrameworkFile to cli.module.filename and removed the invalid module.__filename field.lastCalledWith and toBeCalledWith custom matchers. They now print the most recent calls.Bug fixes when running a single test file and for scoped package names.
Added custom equality matchers for Map/Set and iterables.
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