vitest

Name: vitest
Availability: InStock
Author: 7lemaitre7

Run Jest-compatible unit tests in Vite projects with TypeScript support.

Updated May 28, 2026

Search Tags:#typescript #vitest #testing #vite #mocking #unit-testing #jest-compatible

Ready to run

npx skills add https://github.com/7Lemaitre7/xp-prj --skill vitest-7lemaitre7

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: vitest
Source: https://github.com/7Lemaitre7/xp-prj/tree/main/.agents/skills/vitest
Command: npx skills add https://github.com/7Lemaitre7/xp-prj --skill vitest-7lemaitre7

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

Vitest is a fast testing framework designed to streamline unit testing for front-end and back-end projects, delivering quick feedback during development.

Core Features & Use Cases

Jest-compatible API with native ESM, TypeScript, and JSX support
Seamless Vite integration, smart watch mode, and multi-threaded test execution
Use cases include unit testing, snapshot testing, mocking, and coverage analysis

Quick Start

Run your first unit tests with Vitest using a simple command and start watching for changes.

Frequently Asked Questions about vitest

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

FAQPage Schema

How do I run fast unit tests in a Vite-powered TypeScript project?▼

You can run fast unit tests in a Vite-powered TypeScript project using Vitest, a Jest-compatible framework that natively supports ESM, TypeScript, and JSX to deliver quick feedback during development.

Can I use a Jest-compatible API for mocking and snapshot testing with Vite?▼

Yes, you can use a Jest-compatible API for mocking and snapshot testing with Vite. Vitest offers native ESM support and seamless Vite integration to execute these tests efficiently.

What is the best way to set up unit testing in Vite without complex configuration?▼

The best way to set up unit testing in Vite without complex configuration is using Vitest. It provides seamless Vite integration and allows you to start watching for file changes and running tests with a simple command.

Does Vitest support multi-threaded test execution and smart watch mode?▼

Yes, Vitest supports multi-threaded test execution and smart watch mode. These features streamline unit testing for both front-end and back-end projects by delivering fast feedback loops.

How do I configure fixtures and coverage analysis for unit testing in Vitest?▼

You configure fixtures and coverage analysis for unit testing in Vitest through seamless integration with Vitest.config. This setup satisfies core testing APIs and cross-project compatibility for reliable workflows.