Introducing Rspack 1.0: A New Era in JavaScript Bundling

Welcome back to your newsletter!

Rspack, a next-gen JavaScript bundler, has just launched version 1.0! Written in Rust and compatible with the webpack API and ecosystem, Rspack is a fast alternative to webpack .

Let`s dive in...

what is Rspack?!

It is a high-performance JavaScript bundler, written in Rust, and is designed to seamlessly replace webpack while offering fast build speeds. Its strong compatibility with the webpack ecosystem ensures a smooth transition for users.

Over the past 18 months, since the initial open-source release of Rspack 0.1, an enthusiastic community of 170 contributors has submitted 5,000+ pull requests and addressed over 2,000 issues.

what’s new in Rspack 1.0?

Enhanced Performance

Rspack 1.0 brings performance boosts through optimisations and features like lazy compilation. Moving forward, Rspack aims to further enhance performance for large-scale applications.

Expanded Compatibility

Rspack now supports almost all webpack loaders, including popular plugins, making migration smoother than ever. Supported frameworks include React , Vue , Svelte , and NestJS .

Minimised Bundle Size

With Rspack’s split chunks, tree shaking, and scope hoisting, projects migrating from webpack see equivalent or improved bundle sizes.

New Module Federation 2.0 Support

Rspack supports the new Module Federation 2.0 for micro-frontend architectures, adding dynamic TS type hints, runtime plugins, and preloading options.

Stable API & New Website

Rspack 1.0 features a stable API and a redesigned website with improved documentation, simplifying integration with high-level tools.

the Rspack ecosystem: Rstack tools

Rspack leads the Rstack—a suite of tools to streamline web development:

• Rspack: High-performance bundling with flexible configuration.
• Rsbuild: Out-of-the-box tool for building web applications.
• Rslib: Optimises libraries for ESM and CJS outputs.
• Rspress: Static site generator supporting MDX.
• Rsdoctor: Build analysis tool for issue resolution.

looking ahead: key features on the roadmap

1. Portable Caches: Enabling persistent and portable caching for faster builds across environments.
2. TypeScript Optimisation: Advanced TypeScript handling for improved output and performance.
3. Enhanced ESM Output: More robust ESM support for effective tree-shaking in npm packages.
4. React Server Components: Upcoming first-class support for seamless RSC integration.

ready to get started?

If you’re an existing user, check out the Migration Guide to move to 1.0. For new users, head to Quick Start in the documentation and explore all that Rspack offers.

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