Rspack Has a Free JavaScript Bundler — Webpack-Compatible but 10x Faster

Rspack is a Rust-based JavaScript bundler fully compatible with webpack — use your existing webpack config, get 10x faster builds.

What You Get for Free

• Webpack compatible — most webpack plugins and loaders work
• 10x faster — Rust core vs webpack's JavaScript
• HMR — hot module replacement in <200ms
• Code splitting — automatic chunk optimization
• Tree shaking — dead code elimination
• CSS — built-in CSS processing (no mini-css-extract-plugin)
• TypeScript — built-in transpilation (no ts-loader)
• Module Federation — micro-frontend support

Quick Start

npm install -D @rspack/core @rspack/cli

// rspack.config.js — looks exactly like webpack.config.js
module.exports = {
  entry: './src/index.js',
  output: { filename: 'bundle.js' },
  module: {
    rules: [
      { test: /\.css$/, type: 'css' },  // built-in, no loader needed
      { test: /\.tsx?$/, use: 'builtin:swc-loader' },  // built-in
    ],
  },
}

Why Developers Switch from Webpack

Webpack builds are slow and configs are complex:

• Drop-in replacement — same config format, most plugins work
• 10x faster builds — 30 second builds → 3 seconds
• Built-in features — CSS, TypeScript, minification included
• Same ecosystem — use existing webpack knowledge

A React app's webpack build took 120 seconds. After replacing webpack with @rspack/core in config: 12 seconds, same output, same plugins. Zero code changes.

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