Vitest is a testing tool made for Vite projects. It helps you write unit tests and integration tests quickly. You get a familiar API that works like Jest.
With Vitest you can mock modules, timers, and dates using vi.fn and vi.mock. You can also set code coverage thresholds and run tests in parallel to save time.
It works great for testing Vue, React, and Svelte components. If you use TypeScript, Vitest supports type testing too.
Global
mkdir -p ~/.claude/skills/vitestProject
mkdir -p .claude/skills/vitestGrill Memattpocock/skills
Stress-test your plan with relentless questions until we both understand
Tddmattpocock/skills
Write one test at a time then code to make it pass
Test Driven Developmentobra/superpowers
Write a failing test first then code just enough to pass
Webapp Testinganthropics/skills
Test your local web apps quickly with Playwright automation and screenshots
Qamattpocock/skills
Turn bug reports into GitHub issues through natural conversation without technical fuss
Migrate To Shoehornmattpocock/skills
Replace unsafe as assertions with type-safe partial test data easily
Playwright Best Practicescurrents-dev/playwright-best-practices-skill
Master Playwright testing with best practices for reliable and fast tests
Google Agents Cli Evalgoogle/agents-cli
Run evaluations on your AI agent, find failures, and improve its quality step by step