Rspack

Rspack is an open source web bundler written in Rust, with an API designed to feel familiar to webpack users. It is meant as a drop-in option for projects that want faster builds.

Rspack bundles JavaScript, TypeScript, CSS and assets, with code splitting, tree shaking and a development server. It runs work in parallel and uses incremental builds to speed up hot module replacement. It supports many webpack plugins and loaders and works with any front-end framework.

• Webpack-style configuration and API
• Compatibility with many webpack loaders and plugins
• Incremental builds for faster hot reloading
• Built-in SWC for TypeScript and JavaScript
• Module federation for sharing code between apps

Teams with existing webpack projects who want faster builds without rewriting the whole setup. It also suits projects that run several front ends in one monorepo.

Rspack is free and open source under the MIT license. Compatibility with webpack plugins is broad but not complete, so test your build after migrating. The project publishes its own benchmarks, which are worth checking against your own app before you decide.