Development & Testing

Vite Build Configuration

Configure Vite for lightning-fast development with native ESM, instant HMR, and optimized production builds using Rollup.

Claude Code Codex Copilot Cursor Gemini CLI Windsurf

Overview

Vite is the modern build tool that has largely replaced Webpack for new projects, offering instant dev server startup and lightning-fast hot module replacement powered by native ES modules. AI agents can configure Vite for React, Vue, Svelte, Astro, and vanilla TypeScript projects with minimal boilerplate and maximum performance.

Your AI agent can set up Vite plugins for specific frameworks, configure path aliases, set up environment variables, optimize dependency pre-bundling, and tune the Rollup-based production build. Vite's configuration is simpler than Webpack's, making it easier for agents to generate correct configs on the first attempt. The plugin API is also straightforward, and agents can write custom plugins when needed.

For production builds, Vite leverages Rollup under the hood, supporting code splitting, CSS code splitting, asset inlining, and library mode for publishing packages. Your AI agent can configure build targets, set up proxy rules for API requests, integrate with SSR frameworks, and optimize the build for deployment to any hosting platform.

Who Is This For?

Frontend developers setting up new projects with instant HMR and fast builds
Teams migrating from Webpack to Vite for dramatically faster development experience
Library authors using Vite's library mode to publish NPM packages
Full-stack developers configuring Vite for SSR with Node.js backends

Installation

Setup for Claude Code

npm create vite@latest my-app -- --template react-ts
Claude Code configures and extends vite.config.ts

Configuration

// vite.config.ts
import { defineConfig } from "vite";
import react from "@vitejs/plugin-react";

export default defineConfig({
  plugins: [react()],
  server: { port: 3000, proxy: { "/api": "http://localhost:4000" } },
  build: { target: "es2020", sourcemap: true },
  resolve: { alias: { "@": "/src" } },
});