vitest
Use when writing unit/integration tests for Vite projects - configure vitest.config.ts, write test suites with describe/it, create mock implementations with vi.fn and vi.mock, set up code coverage thresholds, and run tests in parallel
100
Does it follow best practices?
Validation for skill structure
Discovery
100%Based on the skill's description, can an agent find and select it at the right time? Clear, specific descriptions lead to better discovery.
This is a well-crafted skill description that excels across all dimensions. It opens with an explicit 'Use when' clause, lists specific concrete actions with Vitest-specific terminology, and is clearly distinguishable from other testing-related skills through its Vite/Vitest focus. The description uses proper third-person voice and avoids vague language.
| Dimension | Reasoning | Score |
|---|---|---|
Specificity | Lists multiple specific concrete actions: 'configure vitest.config.ts', 'write test suites with describe/it', 'create mock implementations with vi.fn and vi.mock', 'set up code coverage thresholds', and 'run tests in parallel'. | 3 / 3 |
Completeness | Explicitly answers both what (configure vitest, write test suites, create mocks, set up coverage, run parallel tests) AND when ('Use when writing unit/integration tests for Vite projects') with a clear trigger clause at the start. | 3 / 3 |
Trigger Term Quality | Includes natural keywords users would say: 'unit/integration tests', 'Vite projects', 'vitest.config.ts', 'describe/it', 'vi.fn', 'vi.mock', 'code coverage', 'tests in parallel'. Good coverage of both general testing terms and Vitest-specific terminology. | 3 / 3 |
Distinctiveness Conflict Risk | Clearly scoped to Vitest and Vite projects specifically, with distinct triggers like 'vitest.config.ts', 'vi.fn', 'vi.mock' that wouldn't conflict with Jest or other testing frameworks. | 3 / 3 |
Total | 12 / 12 Passed |
Implementation
100%Reviews the quality of instructions and guidance provided to agents. Good implementation is clear, handles edge cases, and produces reliable results.
This is a well-crafted skill that exemplifies good practices: it's concise, immediately actionable with executable code, and uses progressive disclosure effectively through a clear reference table and loading checklist. The cross-skill references add value without bloating the main content.
| Dimension | Reasoning | Score |
|---|---|---|
Conciseness | The content is lean and efficient, providing only essential information. No unnecessary explanations of what Vitest is or how testing frameworks work - it assumes Claude's competence and jumps straight to actionable content. | 3 / 3 |
Actionability | Provides fully executable, copy-paste ready code examples including npm install command, complete vitest.config.ts setup, and a working test file with proper imports. All code is concrete and immediately usable. | 3 / 3 |
Workflow Clarity | For a skill that serves as an overview/entry point, the workflow is clear: install, configure, write tests. The 'When to Use' section clarifies scope, and the reference table provides clear navigation for specific tasks. No destructive operations require validation checkpoints. | 3 / 3 |
Progressive Disclosure | Excellent structure with a concise quick start and well-organized one-level-deep references. The reference table and loading checklist clearly signal where to find detailed information without nesting. The 'DO NOT load all files' guidance is particularly helpful. | 3 / 3 |
Total | 12 / 12 Passed |
Validation
100%Checks the skill against the spec for correct structure and formatting. All validation checks must pass before discovery and implementation can be scored.
Validation — 11 / 11 Passed
Validation for skill structure
No warnings or errors.
- Reviewed
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