Vitest Has a Free Testing Framework That Outperforms Jest

Why Developers Are Switching From Jest to Vitest Last year, a team I was consulting for spent 12 minutes waiting for their Jest test suite to finish. They had 2,000 tests across a Vite-based monorepo. After migrating to Vitest over a weekend, that same suite ran in under 2 minutes. Vitest is a next-generation testing framework powered by Vite. It is blazing fast, Jest-compatible, and completely free. What Makes Vitest Special Vite-powered — uses Vite dev server for instant test transforms Jest-compatible API — migrate with minimal changes Native TypeScript support — no ts-jest configuration Watch mode by default — re-runs only affected tests Built-in coverage — via v8 or istanbul , no extra packages In-source testing — write tests right next to your code Workspace support — test monorepos with a single config Getting Started # Install Vitest npm install -D vitest # Add to package.json # "scripts": { "test": "vitest" } Create vitest.config.ts : import { defineConfig } from " vitest/conf