vitest

name	vitest
description	Use when writing unit/integration tests for Vite projects - provides Vitest configuration, test APIs, mocking patterns, and coverage setup
license	MIT

Vitest

Vite-native testing framework with Jest-compatible API.

When to Use

• Writing unit/integration tests for Vite projects
• Testing Vue/React/Svelte components
• Mocking modules, timers, or dates
• Running concurrent/parallel tests
• Type testing with TypeScript

Quick Start

npm i -D vitest

// vitest.config.ts
import { defineConfig } from 'vitest/config'

export default defineConfig({
  test: {
    globals: true,
    environment: 'node',  // or 'jsdom' for DOM tests
  },
})

// example.test.ts
import { describe, expect, it, vi } from 'vitest'

describe('math',  {
  (,  {
    ( + ).()
  })
})