Vitest Next-Generation Vite-Powered Testing Framework

Vitest is a blazing-fast unit testing framework powered by Vite. It provides native ESM support, TypeScript out of the box, and a Jest-compatible API for seamless migration of existing test suites.

Installation

Use the upstream install or setup path that matches your environment:

• $ npx vitest

Requirements and caveats from upstream:

• Vitest requires Vite >=v6.4.0 and Node >=v22.12.0

Basic usage or getting-started notes:

• <a href="https://vitest.dev">Documentation</a> | <a href="https://vitest.dev/guide/">Getting Started</a> | <a href="https://vitest.dev/guide/#examples">Examples</a> | <a href="https://vitest.dev/guide/why">Why Vitest?...

• Run your tests in the browser natively

• Source: https://github.com/vitest-dev/vitest

• Extracted from upstream docs: https://raw.githubusercontent.com/vitest-dev/vitest/HEAD/README.md

Source

• Agent Skill Exchange