Vitest was created to make testing just work for Vite apps. By building on top of Vite, Vitest natively understands your Vite config and is able to reuse the same resolve and transform pipelines.

Next generation testing framework powered by Vite. Latest version: 4.0.16, last published: 7 hours ago. Start using vitest in your project by running `npm i vitest`. There are 1357 other projects in the npm …

Vite 's config, transformers, resolvers, and plugins. Use the same setup from your app! Smart & instant watch mode, like HMR for tests! Native code coverage via v8 or istanbul. Tinyspy built-in for …

Feb 25, 2025 · Learn how to use Vitest, a fast JavaScript testing framework. This guide covers project setup, writing tests, filtering, mocking, hooks, code coverage, and the Vitest UI.

Vitest (pronounced as "veetest") is a next generation testing framework powered by Vite. You can learn more about the rationale behind the project in the Why Vitest section. You can try Vitest online on …

4 days ago · Configure Angular's Vitest runner for distinct environments. Learn how to implement separate configurations for local remote debugging (port 9333) and pipeline headless execution.

3 days ago · Use Claude or GitHub Copilot to automatically convert Jest tests to Vitest with zero manual config changes.

Next generation testing framework powered by Vite.

Oct 22, 2025 · Vitest captures screenshots of your UI components and pages, then compares them against reference images to detect unintended visual changes. Alongside this feature, Vitest also …

Vitest runs this function multiple times to display different performance results. Vitest uses the tinybench library under the hood, inheriting all its options that can be used as a third argument.