Vitest

A blazing fast unit-test framework
powered by Vite ⚡️

Get StartedWhy Vitest

Features

• Vite's config, transformers, resolvers, and plugins.
• Use the same setup from your app to run the tests!
• Smart & instant watch mode, like HMR for tests!
• Components testing for Vue, React, Svelte, Lit and more
• Out-of-box TypeScript / JSX support
• ESM first, top level await
• Workers multi-threading via tinypool
• Filtering, timeouts, concurrent for suite and tests
• Jest Snapshot
• Chai built-in for assertions + Jest expect compatible APIs
• Tinyspy built-in for mocking
• happy-dom or jsdom for DOM mocking
• Native code coverage via c8
• Rust like in-source testing

Meet The Team

Anthony Fu

A fanatical open sourceror
Core team member of Vite & Vue
Working at NuxtLabs

Sponsor

Patak

A collaborative being
Core team member of Vite
Team member of Vue

Sponsor

Mohammad Bagher

An open source developer
Team member of Poimandres and Vike

Vladimir

An open source fullstack developer

Ivan Demchuk

A tech lead, fullstack developer
Author of fluent-vue

Joaquín Sánchez

A fullstack and android developer
Vite's fanatical follower

Contributors

Sponsored by

Anthony's Sponsors

Patak's Sponsors