vitest-dev

vitest

Next generation testing framework powered by Vite.

16.6k stars1.8k forks53 watchers326 open issuesTypeScriptMIT

EDITOR'S TAKE

Vite-native unit test runner. ~13k stars. Faster than Jest, compatible API. Default for new Vite-based projects in 2026.

Use this if

You are starting a new project on Vite or modernizing from Jest.

Skip if

You are deep in a Jest codebase and migration cost is high — Jest still works.