Vitest v1 Documentation

Next generation testing framework powered by Vite

Vite Powered

Reuse Vite's config and plugins - consistent across your app and tests. But it's not required to use Vitest!

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.