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.

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 10, 2026 · Vitest provides a powerful and efficient way to test React applications, especially when combined with modern tools like Vite. Testing is about building confidence in your code, documenting …

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 …

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 …

To configure vitest itself, add test property in your Vite config. You'll also need to add a reference to Vitest types using a triple slash command at the top of your config file, if you are importing …

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 …

Jan 17, 2025 · Vitest 3 introduces a more performant way to run your browser tests in different browsers or setups. Instead of using the workspace, you can define an array of instances to run your browser …