vitest

Run unit tests in JavaScript and TypeScript projects with Vite integration.

Updated May 6, 2026
One-click install
npx skills add https://github.com/imrim12/openclaw.edu.vn --skill vitest-imrim12
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: vitest
Source: https://github.com/imrim12/openclaw.edu.vn/tree/main/.agents/skills/vitest
Command: npx skills add https://github.com/imrim12/openclaw.edu.vn --skill vitest-imrim12

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires vitest, jest, vite, and includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill addresses the need for a fast and reliable testing framework to ensure code quality and reliability. It is designed for developers who require a robust tool for unit testing, integration testing, and end-to-end testing.

Core Features & Use Cases

  • Fast Execution: Utilizes Vite's transformation pipeline for rapid test updates and hot module replacement.
  • Jest-Compatible API: Offers a seamless transition from Jest for existing test suites.
  • Smart Watch Mode: Automatically reruns only affected tests for efficient execution.
  • ESM and TypeScript Support: Provides out-of-the-box support for modern JavaScript development practices.
  • Parallel Test Execution: Leverages multi-threaded workers for accelerated testing.
  • Use Case: Ideal for a development team that wants to implement automated testing in their workflow, especially for projects using Vite and modern JavaScript/TypeScript.

Quick Start

Run the vitest skill in your project to perform unit testing. Execute 'vitest test' in your terminal to initiate the test runner.

Frequently Asked Questions about vitest

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

FAQPage Schema
How do I run unit testing in a Vite project without slow execution?

Unit testing in Vite projects runs fast by utilizing Vite's transformation pipeline for rapid updates and multi-threaded workers for parallel test execution. This framework automates code verification efficiently for modern JavaScript and TypeScript.

Can I migrate my existing Jest test suite to a Vite-based testing framework?

Yes, you can migrate existing Jest test suites easily. This testing framework provides a Jest-compatible API designed for a seamless transition, allowing you to run your current assertions and mocks without rewriting them.

Does this unit testing framework support TypeScript out of the box?

Yes, this unit testing framework provides out-of-the-box ESM and TypeScript support. It targets modern JavaScript development practices, requiring no extra configuration to verify TypeScript code.

What is the best way to rerun only affected tests during development?

The best way to rerun affected tests is using the Smart Watch Mode. This feature automatically detects code changes and reruns only the affected tests, ensuring efficient execution and rapid feedback during development.

Do I need Vite installed to use this Jest-compatible testing framework?

Yes, Vite is a required dependency. The testing framework integrates directly with Vite's pipeline to provide fast execution, hot module replacement, and ESM support for your code verification workflow.

How do I perform end-to-end testing alongside unit testing in modern JavaScript?

You can perform end-to-end testing and unit testing using this single framework. It is designed for development teams needing a robust tool to automate various testing levels, ensuring code quality across modern JavaScript projects.