Frontend Build Tools: Vite vs Turbopack vs Rspack in 2025

The Build Tool Revolution

Webpack dominated frontend builds for a decade, but its JavaScript-based architecture hit performance limits. The new generation of build tools — written in Rust, Go, and leveraging native ESM — is 10-100x faster.

Vite

Vite (French for "fast") uses native ESM in development and Rollup for production builds. It was created by Evan You (Vue.js creator) and has become the default choice for most frameworks.

Setup

# Create new project
npm create vite@latest my-app -- --template react-ts

# Or add to existing project
npm install -D vite

Configuration

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

export default defineConfig({
  plugins: [react()],
  server: {
    port: 3000,
    proxy: {
      "/api": {
        target: "http://localhost:8080",
        changeOrigin: true,
      },
    },
  },
  build: {
    target: "esnext",
    minify: "esbuild",
    rollupOptions: {
      output: {
        manualChunks: {
          vendor: ["react", "react-dom"],
          utils: ["date-fns", "lodash-es"],
        },
      },
    },
  },
});

Key Features

• Instant dev server start: Uses native ESM, no bundling needed in dev
• Hot Module Replacement: Sub-50ms updates
• Rich plugin ecosystem: Rollup-compatible plugins
• Framework agnostic: React, Vue, Svelte, SolidJS, Lit
• SSR support: Built-in server-side rendering pipeline
• Library mode: Build publishable libraries

Turbopack

Turbopack is the Rust-based successor to webpack, built by Vercel. It is integrated into Next.js and designed for massive codebases.

Usage (Next.js)

# Enable Turbopack in Next.js
next dev --turbopack

// next.config.js
module.exports = {
  experimental: {
    turbo: {
      rules: {
        "*.svg": {
          loaders: ["@svgr/webpack"],
          as: "*.js",
        },
      },
    },
  },
};

Key Features

• Incremental computation: Only rebuilds what changed
• Persistent caching: Cache survives between restarts
• Webpack loader compatibility: Supports existing webpack loaders
• Next.js native: Deeply integrated with the Next.js framework

Limitations (2025)

• Only works with Next.js (not standalone)
• Production builds still experimental
• Smaller plugin ecosystem than Vite

Rspack

Rspack is a Rust-based webpack replacement created by ByteDance. It is designed as a drop-in webpack replacement — same config format, same loaders, same plugins.

Setup

# Create new project
npm create rspack@latest

# Migrate from webpack
npm install -D @rspack/core @rspack/cli
# Rename webpack.config.js to rspack.config.js (most configs work as-is)

Configuration

// rspack.config.js
const { defineConfig } = require("@rspack/cli");

module.exports = defineConfig({
  entry: "./src/index.tsx",
  output: {
    filename: "[name].[contenthash].js",
    path: "./dist",
  },
  module: {
    rules: [
      {
        test: /\.tsx?/,
        use: {
          loader: "builtin:swc-loader",
          options: {
            jsc: { parser: { syntax: "typescript", tsx: true } },
          },
        },
      },
      {
        test: /\.css/,
        type: "css",
      },
    ],
  },
  optimization: {
    splitChunks: {
      chunks: "all",
    },
  },
});

Key Features

• Webpack compatible: Same config format, supports most loaders
• Fast: 5-10x faster than webpack
• Easy migration: Minimal config changes from webpack
• Production ready: Used in ByteDance production

Benchmarks

Development Server Start (Large Project, 1000+ modules)

HMR Update Time

Production Build (1000+ modules)

Note: Turbopack production builds are still experimental.

Migration Guides

webpack to Rspack

# 1. Install Rspack
npm install -D @rspack/core @rspack/cli

# 2. Rename config
mv webpack.config.js rspack.config.js

# 3. Replace webpack imports
# const webpack = require('webpack')
# becomes:
# const rspack = require('@rspack/core')

# 4. Update package.json scripts
# "build": "rspack build"
# "dev": "rspack serve"

Most webpack configs work without changes. The main adjustment is replacing webpack-specific plugins with Rspack equivalents.

webpack to Vite

# 1. Install Vite
npm install -D vite @vitejs/plugin-react

# 2. Create vite.config.ts (see above)

# 3. Move index.html to root directory

# 4. Update imports to use ESM
# require() -> import

# 5. Replace webpack-specific features
# process.env -> import.meta.env
# require.context -> import.meta.glob

Migration from webpack to Vite requires more changes since Vite uses a fundamentally different approach (ESM-first vs bundle-first).

Which Should You Choose?

• Vite: Best for new projects, framework-agnostic, largest ecosystem. The default choice in 2025.
• Turbopack: Best if you use Next.js and want the fastest possible dev experience. Wait for production build stability.
• Rspack: Best for migrating large webpack projects. Drop-in replacement with 5-10x speed improvement.

At TechSaaS, we use Vite for all new frontend projects. For clients with large webpack codebases, we recommend Rspack as the migration path — same config, much faster builds.

Need help optimizing your build pipeline? Contact [email protected].