Next-generation frontend build tool with native ESM dev server, HMR, and Rolldown-powered production builds.

Fast development server using native ES modules and hot module replacement; production builds optimized with Rolldown bundler and Oxc transformer
Configuration via vite.config.ts with support for conditional configs, environment variables, and TypeScript; plugin API for extending build behavior
Built-in asset handling with import queries (?raw, ?url), glob imports, and import.meta.env for environment-based logic
Library mode and SSR support including middleware mode, ssrLoadModule, and JavaScript API for programmatic builds
Official plugins available for Vue 3, React, JSX, and legacy browser support; Vite 8 migration guide for Rolldown adoption

Vite

Based on Vite 8 beta (Rolldown-powered). Vite 8 uses Rolldown bundler and Oxc transformer.

Vite is a next-generation frontend build tool with fast dev server (native ESM + HMR) and optimized production builds.

Preferences

Use TypeScript: prefer vite.config.ts
Always use ESM, avoid CommonJS

Core

Topic	Description	Reference
Configuration	`vite.config.ts`, `defineConfig`, conditional configs, `loadEnv`	core-config
Features	`import.meta.glob`, asset queries (`?raw`, `?url`), `import.meta.env`, HMR API	core-features
Plugin API	Vite-specific hooks, virtual modules, plugin ordering	core-plugin-api

Build & SSR

Topic	Description	Reference
Build & SSR	Library mode, SSR middleware mode, `ssrLoadModule`, JavaScript API	build-and-ssr

Advanced

Topic	Description	Reference
Environment API	Vite 6+ multi-environment support, custom runtimes	environment-api
Rolldown Migration	Vite 8 changes: Rolldown bundler, Oxc transformer, config migration	rolldown-migration

Quick Reference

CLI Commands

vite              # Start dev server
vite build        # Production build
vite preview      # Preview production build
vite build --ssr  # SSR build

Common Config

import { defineConfig } from 'vite'

export default defineConfig({
  plugins: [],
  resolve: { alias: { '@': '/src' } },
  server: { port: 3000, proxy: { '/api': 'http://localhost:8080' } },
  build: { target: 'esnext', outDir: 'dist' },
})

Official Plugins

@vitejs/plugin-vue - Vue 3 SFC support
@vitejs/plugin-vue-jsx - Vue 3 JSX
@vitejs/plugin-react - React with Oxc/Babel
@vitejs/plugin-react-swc - React with SWC
@vitejs/plugin-legacy - Legacy browser support

Cross-Skill References

Testing → Use vitest skill (Vite-native testing)
Vue projects → Use vue skill for component patterns
Library bundling → Use tsdown skill for TypeScript libs