f5792c40be
Pulled ALL skills from 15 source repositories: - anthropics/skills: 16 (docs, design, MCP, testing) - obra/superpowers: 14 (TDD, debugging, agents, planning) - coreyhaines31/marketingskills: 25 (marketing, CRO, SEO, growth) - better-auth/skills: 5 (auth patterns) - vercel-labs/agent-skills: 5 (React, design, Vercel) - antfu/skills: 16 (Vue, Vite, Vitest, pnpm, Turborepo) - Plus 13 individual skills from various repos Mosaic Stack is not limited to coding — the Orchestrator and subagents serve coding, business, design, marketing, writing, logistics, analysis, and more. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
53 lines
3.2 KiB
Markdown
53 lines
3.2 KiB
Markdown
---
|
|
name: vitest
|
|
description: Vitest fast unit testing framework powered by Vite with Jest-compatible API. Use when writing tests, mocking, configuring coverage, or working with test filtering and fixtures.
|
|
metadata:
|
|
author: Anthony Fu
|
|
version: "2026.1.28"
|
|
source: Generated from https://github.com/vitest-dev/vitest, scripts located at https://github.com/antfu/skills
|
|
---
|
|
|
|
Vitest is a next-generation testing framework powered by Vite. It provides a Jest-compatible API with native ESM, TypeScript, and JSX support out of the box. Vitest shares the same config, transformers, resolvers, and plugins with your Vite app.
|
|
|
|
**Key Features:**
|
|
- Vite-native: Uses Vite's transformation pipeline for fast HMR-like test updates
|
|
- Jest-compatible: Drop-in replacement for most Jest test suites
|
|
- Smart watch mode: Only reruns affected tests based on module graph
|
|
- Native ESM, TypeScript, JSX support without configuration
|
|
- Multi-threaded workers for parallel test execution
|
|
- Built-in coverage via V8 or Istanbul
|
|
- Snapshot testing, mocking, and spy utilities
|
|
|
|
> The skill is based on Vitest 3.x, generated at 2026-01-28.
|
|
|
|
## Core
|
|
|
|
| Topic | Description | Reference |
|
|
|-------|-------------|-----------|
|
|
| Configuration | Vitest and Vite config integration, defineConfig usage | [core-config](references/core-config.md) |
|
|
| CLI | Command line interface, commands and options | [core-cli](references/core-cli.md) |
|
|
| Test API | test/it function, modifiers like skip, only, concurrent | [core-test-api](references/core-test-api.md) |
|
|
| Describe API | describe/suite for grouping tests and nested suites | [core-describe](references/core-describe.md) |
|
|
| Expect API | Assertions with toBe, toEqual, matchers and asymmetric matchers | [core-expect](references/core-expect.md) |
|
|
| Hooks | beforeEach, afterEach, beforeAll, afterAll, aroundEach | [core-hooks](references/core-hooks.md) |
|
|
|
|
## Features
|
|
|
|
| Topic | Description | Reference |
|
|
|-------|-------------|-----------|
|
|
| Mocking | Mock functions, modules, timers, dates with vi utilities | [features-mocking](references/features-mocking.md) |
|
|
| Snapshots | Snapshot testing with toMatchSnapshot and inline snapshots | [features-snapshots](references/features-snapshots.md) |
|
|
| Coverage | Code coverage with V8 or Istanbul providers | [features-coverage](references/features-coverage.md) |
|
|
| Test Context | Test fixtures, context.expect, test.extend for custom fixtures | [features-context](references/features-context.md) |
|
|
| Concurrency | Concurrent tests, parallel execution, sharding | [features-concurrency](references/features-concurrency.md) |
|
|
| Filtering | Filter tests by name, file patterns, tags | [features-filtering](references/features-filtering.md) |
|
|
|
|
## Advanced
|
|
|
|
| Topic | Description | Reference |
|
|
|-------|-------------|-----------|
|
|
| Vi Utilities | vi helper: mock, spyOn, fake timers, hoisted, waitFor | [advanced-vi](references/advanced-vi.md) |
|
|
| Environments | Test environments: node, jsdom, happy-dom, custom | [advanced-environments](references/advanced-environments.md) |
|
|
| Type Testing | Type-level testing with expectTypeOf and assertType | [advanced-type-testing](references/advanced-type-testing.md) |
|
|
| Projects | Multi-project workspaces, different configs per project | [advanced-projects](references/advanced-projects.md) |
|