Vitest Testing
- 196 repo stars
- Updated July 25, 2026
- secondsky/claude-skills
Write fast unit and integration tests for TypeScript/JavaScript projects with Vitest — native ESM, Vite HMR, and mocking.
About
Vitest provides modern, fast unit and integration testing for TypeScript and JavaScript with native ESM, Vite-powered HMR, and comprehensive mocking. Developers use it to test TS/JS projects before shipping.
- Vitest unit + integration tests
- Native ESM support
- Vite-powered HMR
- Comprehensive mocking
Vitest Testing by the numbers
- Data as of Jul 28, 2026 (Skillselion catalog sync)
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| repo stars | ★ 196 |
|---|---|
| Last updated | July 25, 2026 |
| Repository | secondsky/claude-skills ↗ |
What it does
Write fast unit and integration tests for TypeScript/JavaScript projects with Vitest — native ESM, Vite HMR, and mocking.
README.md
Vitest Testing Skill
Modern TypeScript/JavaScript testing with Vitest - blazingly fast with Vite-powered HMR.
Overview
Expert knowledge for testing JavaScript/TypeScript projects using Vitest with native ESM support, comprehensive mocking, and instant watch mode.
Key Features
- Lightning-fast (Vite-powered)
- Native ESM and TypeScript support
- Jest-compatible API
- Smart watch mode with HMR
- Component testing support
- Parallel execution
When to Use
- Unit testing TypeScript/JavaScript projects
- Integration testing with APIs
- Component testing (React, Vue, Svelte)
- Migration from Jest to Vitest
- Fast TDD workflow
Quick Start
# Install (prefer bun)
bun add -d vitest
# Run tests
bun test
# With coverage
bun test --coverage
# UI mode
bun test --ui
Auto-Trigger Keywords
- vitest testing
- typescript testing
- javascript unit tests
- vite testing
- ESM testing
- fast testing
- watch mode testing
Source
Adapted from laurigates/dotfiles
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