vitest
✓Vitest testing framework patterns for test setup, async testing, mocking with vi.*, snapshots, and test performance (formerly test-vitest). This skill should be used when writing or debugging Vitest tests. This skill does NOT cover TDD methodology (use test-tdd skill), API mocking with MSW (use test-msw skill), or Jest-specific APIs.
Installation
SKILL.md
Comprehensive performance optimization and best practices guide for Vitest testing framework. Contains 44 rules across 8 categories, prioritized by impact to guide test writing, refactoring, and code review.
| 1 | Async Patterns | CRITICAL | async- | | 2 | Test Setup & Isolation | CRITICAL | setup- | | 3 | Mocking Patterns | HIGH | mock- | | 4 | Performance | HIGH | perf- | | 5 | Snapshot Testing | MEDIUM | snap- | | 6 | Environment | MEDIUM | env- | | 7 | Assertions | LOW-MEDIUM | assert- | | 8 | Test Organization | LOW | org- |
Read individual reference files for detailed explanations and code examples:
Vitest testing framework patterns for test setup, async testing, mocking with vi.*, snapshots, and test performance (formerly test-vitest). This skill should be used when writing or debugging Vitest tests. This skill does NOT cover TDD methodology (use test-tdd skill), API mocking with MSW (use test-msw skill), or Jest-specific APIs. Source: thongdn-it/react-agent-skills.
Facts (cite-ready)
Stable fields and commands for AI/search citations.
- Install command
npx skills add https://github.com/thongdn-it/react-agent-skills --skill vitest- Category
- </>Dev Tools
- Verified
- ✓
- First Seen
- 2026-02-01
- Updated
- 2026-02-18
Quick answers
What is vitest?
Vitest testing framework patterns for test setup, async testing, mocking with vi.*, snapshots, and test performance (formerly test-vitest). This skill should be used when writing or debugging Vitest tests. This skill does NOT cover TDD methodology (use test-tdd skill), API mocking with MSW (use test-msw skill), or Jest-specific APIs. Source: thongdn-it/react-agent-skills.
How do I install vitest?
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/thongdn-it/react-agent-skills --skill vitest Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code or Cursor
Where is the source repository?
https://github.com/thongdn-it/react-agent-skills
Details
- Category
- </>Dev Tools
- Source
- skills.sh
- First Seen
- 2026-02-01