Vitest
Vitest is an open-source JavaScript/TypeScript testing framework powered by Vite.
Free tierOpen sourceVerified
Our verdict
A fast, open-source unit test runner for JavaScript and TypeScript projects. A natural fit for Vite-based codebases and quick feedback loops for AI agents.
Best for
- ✓ Unit tests in JS/TS projects
- ✓ Fast feedback for AI coding agents
Watch out for
- ! Unit tests only; pair with Playwright for end-to-end tests
Pricing
Read from the official pricing page. Prices in USD; always confirm on the vendor's site.
| Plan | Price | Details |
|---|---|---|
| Open source | Free | Free, MIT-licensed. |
Note: Copyright is held by VoidZero Inc. and Vitest contributors. Vitest has no paid tier.
Open source (MIT). Source code
Featured in
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