Vitest
MIT Vite-native unit/integration test runner
Libraries / Testing · OSS/MIT · 17.3k
Reviewed 2026-09-06 · last push 2026-10-20 · repo checked 2026-10-21
What's Good
MIT. Jest-compatible API, Vite transform pipeline, watch mode, TypeScript/ESM first-class, browser mode options. Shares config/plugins with Vite. Fast feedback in Vite apps and libraries.
The Catch
Vs Vite: Vite-native test runner; not the bundler. Not full E2E browser suites. Closest when Vite is already the toolchain.
Verdict
MIT Vite test runner. Free forever; Vite itself is the bundler gem.
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Markdown
[](https://stackgems.com/gems/vitest)
HTML
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