vitest

Name: vitest
Availability: InStock
Author: nguyenvanle

Configure Vitest for unit testing in Vite-based projects.

Updated Mar 5, 2026

Search Tags:#typescript #vitest #testing #javascript #vite #mocking

Ready to run

npx skills add https://github.com/Nguyenvanle/ag-wander-ai --skill vitest-nguyenvanle

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: vitest
Source: https://github.com/Nguyenvanle/ag-wander-ai/tree/main/.agents/skills/vitest
Command: npx skills add https://github.com/Nguyenvanle/ag-wander-ai --skill vitest-nguyenvanle

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Vitest provides a fast, integrated unit testing framework for modern web apps built with Vite, delivering quick feedback during development and robust tooling.

Core Features & Use Cases

Jest-compatible API with native ESM, TypeScript support, and seamless mocking, snapshots, and coverage.
Optimized for Vite-based projects, enabling fast test runs and rich developer experience across React, Vue, Svelte, and other ecosystems.
Use cases include testing components, utilities, and libraries with fast feedback, reliable test isolation, and easy integration with your existing tooling.

Quick Start

Install Vitest in your project, write a simple test file using test and expect, and run via npm or pnpm to see instant feedback.

Frequently Asked Questions about vitest

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I set up unit testing for a Vite app with TypeScript?▼

Vitest streamlines unit testing for Vite apps by providing a Jest-compatible API with native ESM and TypeScript support. You simply install it, write test files using test and expect, and run via npm or pnpm for instant feedback.

Does Vitest work with React, Vue, and Svelte components?▼

Yes, Vitest is optimized for Vite-based projects and supports testing components across React, Vue, Svelte, and other ecosystems, delivering fast test runs and reliable test isolation.

Can I use Jest-compatible APIs and mocking in Vite projects?▼

Yes, Vitest provides a Jest-compatible API with seamless mocking, snapshots, and coverage configuration, allowing you to easily integrate testing into your existing Vite-powered tooling.

What's the best way to run fast unit tests with native ESM support?▼

Vitest is a fast, Vite-native framework designed for running unit tests with native ESM support. It requires a Vite-based environment to deliver quick feedback during development.

Do I need a Vite-based environment to use Vitest?▼

Yes, Vitest requires a Vite-based environment to function. It is specifically optimized for Vite-powered projects to enable fast test runs and a rich developer experience.