What plugin does each framework use?

React uses @vitejs/plugin-react, Vue uses @vitejs/plugin-vue, and Svelte uses @sveltejs/vite-plugin-svelte. Vanilla JavaScript needs no framework plugin at all, so Vite works out of the box.

How does the server proxy entry work?

The server.proxy block forwards matching request paths to another origin during development, which avoids CORS errors when your frontend calls a separate backend. The tool sets changeOrigin to true so the Host header matches the target.

What is the @ resolve alias for?

It maps the @ prefix to your src directory so you can write imports like @/components/Button instead of long relative paths. The config uses path.resolve and __dirname to build an absolute path.

Do I still need a tsconfig for TypeScript?

Yes. vite.config.ts handles bundling, but TypeScript type-checking and path mapping still come from your tsconfig.json. If you use the @ alias, mirror it under compilerOptions.paths so the editor resolves it too.

Is this config production-ready?

It is a solid starting point with sensible build defaults like sourcemaps and a configurable outDir. For production you may add code-splitting, define replacements, or compression plugins, but the generated file builds and serves a real app as-is.

vite.config.ts Builder

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Vite needs a short config file to wire up your framework plugin, dev server, and build output. This builder generates a clean, working vite.config.ts for the framework you pick, so you can skip the boilerplate and start coding.

How it works

The config exports defineConfig({...}), which gives you full TypeScript autocompletion for every option. The structure is the same across frameworks — only the plugins array changes:

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

export default defineConfig({
  plugins: [react()],
  server: { port: 5173, proxy: { "/api": "http://localhost:3000" } },
  build: { outDir: "dist", sourcemap: true },
});

The resolve.alias map turns @ into an absolute path to your src folder using path.resolve(__dirname, "./src"). The server.proxy block forwards a path prefix such as /api to a backend origin during development, setting changeOrigin: true so the upstream Host header is rewritten correctly.

Tips and notes

Install the matching plugin package after copying the config — for example npm i -D @vitejs/plugin-react. If you enable the @ alias here, add the same mapping to your tsconfig.json under compilerOptions.paths so your editor and the type-checker resolve imports the same way Vite does at build time. Leave the proxy target blank if your app has no separate backend.