Vitest v0 Documentation

A blazing fast unit test framework powered by Vite

Vite Powered

Reuse Vite's config, transformers, resolvers, and plugins - consistent across your app and tests.

Jest Compatible

Expect, snapshot, coverage, and more - migrating from Jest is straightforward.

Smart & instant watch mode

Only rerun the related changes, just like HMR for tests!

ESM, TypeScript, JSX

Out-of-box ESM, TypeScript and JSX support powered by esbuild