Rspack
@rspack.dev
Rstack is a lightning-fast JavaScript toolchain that includes Rspack, Rsbuild, Rslib, Rspress, Rsdoctor, Rstest and Rslint.
10 million monthly downloads. Huge thanks to everyone trusting Rspack. ❤️
November 12, 2025 at 7:12 AM
10 million monthly downloads. Huge thanks to everyone trusting Rspack. ❤️
More speed from SWC:
Lexer: 4–11% faster, Parser: 2-3% faster
Lexer: 4–11% faster, Parser: 2-3% faster
November 4, 2025 at 9:32 AM
More speed from SWC:
Lexer: 4–11% faster, Parser: 2-3% faster
Lexer: 4–11% faster, Parser: 2-3% faster
In the next release, Rspack's source map generation is 30% faster 🚀
November 3, 2025 at 11:57 PM
In the next release, Rspack's source map generation is 30% faster 🚀
Rsbuild spotted at React Conf 👀✨
October 8, 2025 at 4:37 AM
Rsbuild spotted at React Conf 👀✨
Rsdoctor install size reduced from 22.6 MB → 15.7 MB in v1.3 — ~30% smaller & faster installs 🚀
September 28, 2025 at 6:01 AM
Rsdoctor install size reduced from 22.6 MB → 15.7 MB in v1.3 — ~30% smaller & faster installs 🚀
Rspack v1.5.7 is out!
🍃 Tree shaking now works for destructuring in `.then()` callbacks
💡 Support preserving JSX in output, commonly used for libraries.
🍃 Tree shaking now works for destructuring in `.then()` callbacks
💡 Support preserving JSX in output, commonly used for libraries.
September 24, 2025 at 7:38 AM
Rspack v1.5.7 is out!
🍃 Tree shaking now works for destructuring in `.then()` callbacks
💡 Support preserving JSX in output, commonly used for libraries.
🍃 Tree shaking now works for destructuring in `.then()` callbacks
💡 Support preserving JSX in output, commonly used for libraries.
Jiti is now bundled with Rspack/SWC— smaller bundle size & faster.
Since Rsbuild relies on Jiti for config loading, this also benefits our users. 🥳
Since Rsbuild relies on Jiti for config loading, this also benefits our users. 🥳
September 22, 2025 at 1:34 PM
Jiti is now bundled with Rspack/SWC— smaller bundle size & faster.
Since Rsbuild relies on Jiti for config loading, this also benefits our users. 🥳
Since Rsbuild relies on Jiti for config loading, this also benefits our users. 🥳
Over 2M weekly downloads. Thanks for packing with us! 🦀
September 9, 2025 at 8:14 AM
Over 2M weekly downloads. Thanks for packing with us! 🦀
Rslib v0.13 introduces tsgo to make declaration generation faster 🚀
September 9, 2025 at 4:37 AM
Rslib v0.13 introduces tsgo to make declaration generation faster 🚀
In the next release, Rspack ships advanced tree-shaking for dynamic imports via member expression analysis.
We've also contributed this optimization to webpack — pushing the ecosystem forward. 🚀
We've also contributed this optimization to webpack — pushing the ecosystem forward. 🚀
September 5, 2025 at 8:08 AM
In the next release, Rspack ships advanced tree-shaking for dynamic imports via member expression analysis.
We've also contributed this optimization to webpack — pushing the ecosystem forward. 🚀
We've also contributed this optimization to webpack — pushing the ecosystem forward. 🚀
Congratulations to the MDN team on this amazing launch 🎉
We're thrilled to see MDN's new front end is now powered by Rspack. It's exciting to see our bundler helping deliver an exceptional experience to millions of developers worldwide.
We're thrilled to see MDN's new front end is now powered by Rspack. It's exciting to see our bundler helping deliver an exceptional experience to millions of developers worldwide.
August 20, 2025 at 2:11 PM
Congratulations to the MDN team on this amazing launch 🎉
We're thrilled to see MDN's new front end is now powered by Rspack. It's exciting to see our bundler helping deliver an exceptional experience to millions of developers worldwide.
We're thrilled to see MDN's new front end is now powered by Rspack. It's exciting to see our bundler helping deliver an exceptional experience to millions of developers worldwide.
Rspack 1.5 will support the "using" declaration.
This enables the explicit resource management feature in ECMAScript, making resource cleanup more straightforward ✨
This enables the explicit resource management feature in ECMAScript, making resource cleanup more straightforward ✨
August 18, 2025 at 9:22 AM
Rspack 1.5 will support the "using" declaration.
This enables the explicit resource management feature in ECMAScript, making resource cleanup more straightforward ✨
This enables the explicit resource management feature in ECMAScript, making resource cleanup more straightforward ✨
Rslint is a fork of tsgolint, building upon the innovative proof-of-concept work by @auvred. Since tsgolint has no current plans for continued development, we're deeply grateful to @auvred for allowing us to carry forward this project in this way. ❤️
August 15, 2025 at 6:24 AM
Rslint is a fork of tsgolint, building upon the innovative proof-of-concept work by @auvred. Since tsgolint has no current plans for continued development, we're deeply grateful to @auvred for allowing us to carry forward this project in this way. ❤️
We're building an Rspack REPL powered by @rspack/browser. Try out Rspack builds in your browser and easily share results with the community.
August 4, 2025 at 9:40 AM
We're building an Rspack REPL powered by @rspack/browser. Try out Rspack builds in your browser and easily share results with the community.
What is a barrel file: vercel.com/blog/how-we-...
August 1, 2025 at 10:08 AM
What is a barrel file: vercel.com/blog/how-we-...
Rspack v1.5 will introduce an experimental optimization that skips building unused reexports in side-effect-free barrel files.
This reduces the build time of `import { Button } from 'antd'` from 528ms to 82ms.
This reduces the build time of `import { Button } from 'antd'` from 528ms to 82ms.
August 1, 2025 at 10:07 AM
Rspack v1.5 will introduce an experimental optimization that skips building unused reexports in side-effect-free barrel files.
This reduces the build time of `import { Button } from 'antd'` from 528ms to 82ms.
This reduces the build time of `import { Button } from 'antd'` from 528ms to 82ms.
One of our community partners replaced webpack with Rspack in a popular web framework in China. Here are the benefits reported by users:
- 5x faster dev, build, and HMR
- 1.1MB smaller bundles
- 5x faster dev, build, and HMR
- 1.1MB smaller bundles
July 30, 2025 at 1:48 PM
One of our community partners replaced webpack with Rspack in a popular web framework in China. Here are the benefits reported by users:
- 5x faster dev, build, and HMR
- 1.1MB smaller bundles
- 5x faster dev, build, and HMR
- 1.1MB smaller bundles
@rspack/browser is cooking 🍳🧑🍳
July 28, 2025 at 7:53 AM
@rspack/browser is cooking 🍳🧑🍳
Rspack v1.4.10 is here:
✨ 30% smaller Wasm bundle (38.9MB → 27.2MB)
⚡ 4x faster tree shaking analysis in large projects
✨ 30% smaller Wasm bundle (38.9MB → 27.2MB)
⚡ 4x faster tree shaking analysis in large projects
July 24, 2025 at 8:39 AM
Rspack v1.4.10 is here:
✨ 30% smaller Wasm bundle (38.9MB → 27.2MB)
⚡ 4x faster tree shaking analysis in large projects
✨ 30% smaller Wasm bundle (38.9MB → 27.2MB)
⚡ 4x faster tree shaking analysis in large projects
Rspack v1.4.9 is out: 🎉
We optimized Rust dependencies and build flags, reducing install size across all platforms. More size improvements are coming soon. 🍀
We optimized Rust dependencies and build flags, reducing install size across all platforms. More size improvements are coming soon. 🍀
July 22, 2025 at 9:50 AM
Rspack v1.4.9 is out: 🎉
We optimized Rust dependencies and build flags, reducing install size across all platforms. More size improvements are coming soon. 🍀
We optimized Rust dependencies and build flags, reducing install size across all platforms. More size improvements are coming soon. 🍀
In the next release, Rspack will be able to emit errors for duplicate ESM exports:
July 21, 2025 at 11:02 PM
In the next release, Rspack will be able to emit errors for duplicate ESM exports:
🚀 Rspack v1.4.8 is out!
We've implemented a Rust watcher to replace the original watchpack package, making HMR ~10% faster.
Combined with lazy compilation for lightning-fast dev experience ⚡
We've implemented a Rust watcher to replace the original watchpack package, making HMR ~10% faster.
Combined with lazy compilation for lightning-fast dev experience ⚡
July 16, 2025 at 6:34 AM
🚀 Rspack v1.4.8 is out!
We've implemented a Rust watcher to replace the original watchpack package, making HMR ~10% faster.
Combined with lazy compilation for lightning-fast dev experience ⚡
We've implemented a Rust watcher to replace the original watchpack package, making HMR ~10% faster.
Combined with lazy compilation for lightning-fast dev experience ⚡
And in other cases we saw even bigger gains: 📈
July 15, 2025 at 3:45 AM
And in other cases we saw even bigger gains: 📈
🚀 SWC parser just got 12-14% faster in the past 2 weeks! Our team contributed 30+ PRs and we're just getting started 💪
July 15, 2025 at 3:44 AM
🚀 SWC parser just got 12-14% faster in the past 2 weeks! Our team contributed 30+ PRs and we're just getting started 💪
Our team member contributed to browserslist-rs, making data static to reduce memory usage and binary size.
This benefits all dependent tools like Rspack, SWC, Turbopack, and LightningCSS. Rspack's binary size was reduced by 1.64MB. 🚀
This benefits all dependent tools like Rspack, SWC, Turbopack, and LightningCSS. Rspack's binary size was reduced by 1.64MB. 🚀
July 3, 2025 at 8:02 AM
Our team member contributed to browserslist-rs, making data static to reduce memory usage and binary size.
This benefits all dependent tools like Rspack, SWC, Turbopack, and LightningCSS. Rspack's binary size was reduced by 1.64MB. 🚀
This benefits all dependent tools like Rspack, SWC, Turbopack, and LightningCSS. Rspack's binary size was reduced by 1.64MB. 🚀