# jest

> Delightful JavaScript Testing.

Latest version **30.5.1** (published 2026-09-01) · MIT license · 0 weekly downloads

## Install

```sh
npm install jest
pnpm add jest
yarn add jest
bun add jest
```

Provides the command `jest`.

## Health

**Score 70/100 (B)** — status: active.

Positive: has types; esm support; no vulnerabilities; recently updated; high maintenance score; popular repo.

Warnings: low downloads.

## Facts

| | |
|---|---|
| Version | 30.5.1 |
| Published | 2026-09-01 |
| First published | 2012-02-22 |
| Weekly downloads | 0 |
| License | MIT |
| TypeScript types | bundled |
| Module format | ESM + CommonJS |
| Node | ^18.14.0 \|\| ^20.0.0 \|\| ^22.0.0 \|\| >=24.0.0 |
| Dependencies | 4 |
| Unpacked size | 6.5 KB |
| Known vulnerabilities | 0 |
| Install scripts | no |
| GitHub stars | 45458 |
| Maintainers | aaronabramov, simenb, rickhanlonii, openjs-operations, cpojer |
| Keywords | ava, babel, coverage, easy, expect, facebook, immersive, instant, jasmine, jest, jsdom, mocha, mocking, painless, qunit, runner, sandboxed, snapshot, tap, tape, test, testing, typescript, watch |

## Links

- npm: https://www.npmjs.com/package/jest
- Repository: https://github.com/jestjs/jest
- Homepage: https://jestjs.io/
- Issues: https://github.com/jestjs/jest/issues
- npm.io page: https://npm.io/package/jest

## Dependencies (4)

- [jest-cli](https://npm.io/package/jest-cli.md) 30.5.1
- [@jest/core](https://npm.io/package/@jest/core.md) 30.5.1
- [@jest/types](https://npm.io/package/@jest/types.md) 30.5.1
- [import-local](https://npm.io/package/import-local.md) ^3.2.0

## Alternatives

- [duck](https://npm.io/package/duck.md) — 4.2M weekly downloads
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- [@ethereum-waffle/mock-contract](https://npm.io/package/@ethereum-waffle/mock-contract.md) — 40.0K weekly downloads

## Recent versions

- 30.5.1 (latest) — 2026-09-01
- 30.0.0-rc.1 (next) — 2025-06-09
- 30.5.0 — 2026-08-28
- 30.4.2 — 2026-05-09
- 30.4.1 — 2026-05-08
- 30.4.0 — 2026-05-07
- 30.3.0 — 2026-03-10
- 30.2.0 — 2025-09-28
- 30.1.3 — 2025-09-02
- 30.1.2 — 2025-09-01
- 30.1.1 — 2025-08-27
- 30.1.0 — 2025-08-27
- 30.0.5 — 2025-07-22
- 30.0.4 — 2025-07-02
- 30.0.3 — 2025-06-25
- … 367 more at https://npm.io/package/jest/versions

## README

# Jest

🃏 Delightful JavaScript Testing

- **👩🏻‍💻 Developer Ready**: Complete and ready to set-up JavaScript testing solution. Works out of the box for any React project.

- **🏃🏽 Instant Feedback**: Failed tests run first. Fast interactive mode can switch between running all tests or only test files related to changed files.

- **📸 Snapshot Testing**: Jest can [capture snapshots](https://jestjs.io/docs/snapshot-testing) of React trees or other serializable values to simplify UI testing.

Read More: https://jestjs.io/

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_Source: https://npm.io/package/jest · Machine-readable twin of the npm.io package page. Health data is recomputed on every publish._