vitest
Next generation testing framework powered by Vite
A fast, Vite-native test runner with a Jest-compatible API.
When to choose it: Modern TS/ESM projects (especially Vite ones) wanting Jest's API but much faster, with native ESM and TS.
- + Very fast
- + Jest-compatible API
- + Native ESM & TS
- - Younger than Jest
- - Best inside the Vite ecosystem
- Latest version
- 4.1.8
- Monthly downloads
- 236,204,447
- GitHub stars
- 16,611
- Minified + gzip
- 79.9 kB
- Dependencies
- 20
- License
- MIT
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Data from npm, Bundlephobia and GitHub. Last updated 2026-06-02.