Vitest - Unit Testing at Vite Speed

Your Jest unit tests run too slowly, ESM and TypeScript configuration requires many workarounds, and developer experience suffers. You need a faster solution compatible with existing tests.

Vitest is a next-generation testing framework powered by Vite. It offers native ESM and TypeScript support, Jest API compatibility, and watch mode with instant feedback. We migrate existing Jest tests to Vitest, configure code coverage, snapshot testing, and in-source testing. We integrate with CI/CD for automatic verification.

Unit tests running up to 10x faster than Jest. Native TypeScript and ESM without configuration. Watch mode gives instant feedback on every code change. Your team writes and runs tests more willingly, resulting in higher code quality.