Vitest Integration (Nx)

Use deterministic Vitest config that works with Nx caching and coverage outputs.

Baseline Test Config

import { defineConfig } from 'vite';

export default defineConfig({
  test: {
    reporters: ['default'],
    globals: true,
    environment: 'jsdom',
    include: ['src/**/*.{test,spec}.{js,mjs,cjs,ts,mts,cts,jsx,tsx}'],
    cache: {
      dir: '../../node_modules/.vitest/apps/my-app',
    },
    coverage: {
      provider: 'v8',
      reportsDirectory: '../../coverage/apps/my-app',
    },
  },
});

Environment Selection

• jsdom: UI components, browser APIs
• node: backend logic, utility libraries
• happy-dom: alternative DOM runtime

Required Nx-Friendly Settings

• reporters: keep explicit (['default'])
• cache.dir: workspace-relative path
• coverage.reportsDirectory: workspace-relative path

Separate Config Option

If test concerns become large, use a dedicated vitest.config.ts and keep vite.config.ts focused on build/serve.

Validation Commands

bunx nx run <project>:test
bunx nx run <project>:test --coverage