Rstack is a lightning-fast JavaScript toolchain that includes Rspack, Rsbuild, Rslib, Rspress, Rsdoctor, Rstest and Rslint.
Joined January 2023
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Rspack retweeted
SWC Next is now in Rspack! Just the parser for now, but this is only the beginning.
Get ready for an even faster Rspack
🦀 Rspack 2.3 is here!
🚀 5–20% faster builds
⚡️ SWC Next parser
📉 Up to 27.4% lower peak build memory
📦 Less duplicate code across chunks
💾 ~79% less disk usage with the new cache
🎨 Improved built-in CSS
rspack.rs/blog/announcing-2-…
Rspack retweeted
Introducing SWC Next: the foundation for SWC’s next major version, built on a new architecture inspired by Yuku.
- Up to 3x faster native parsing
- Up to 10x faster parsing through the JavaScript API
- A flat, ESTree-based AST designed for speed, memory efficiency, and JavaScript extensibility
Starting with parsing, we’re bringing the rest of SWC to this new architecture.
Built together by the SWC and Rstack teams.
Rspack retweeted
SWC Next is here!
Today, customizing how your code is transformed often means using Babel plugins or writing Wasm plugins for SWC.
I believe the next generation of JS compilers should combine Rust's performance with the flexibility to write custom transform plugins in JavaScript.
SWC Next's flat AST enables efficient data exchange between Rust and JS, laying the groundwork for fast JS plugins 🚀
Introducing SWC Next: the foundation for SWC’s next major version, built on a new architecture inspired by Yuku.
- Up to 3x faster native parsing
- Up to 10x faster parsing through the JavaScript API
- A flat, ESTree-based AST designed for speed, memory efficiency, and JavaScript extensibility
Starting with parsing, we’re bringing the rest of SWC to this new architecture.
Built together by the SWC and Rstack teams.
Rspack retweeted
After migration to @rspack_dev Rsbuild, then try Rstest as a replacement for Jest. This reuse your Rsbuild config making your test runner behavior closer to your build and has single source. You can delegate the task to the agent. Meaning the annoying works when doing migration like replacing jest references to rs, changing the mocks, rewriting snapshots, etc majority of these will be handled by your agent. Just make sure you install Rstest skills and the agent is doing loop.
Our average shard with jest in CI is around 11mins. Down to 2 mins with rstest. Its just fast!
Rspack retweeted
Please don’t use rspack, use rsbuild.
Only ever use rspack directly if you are porting off webpack.
Rspack retweeted
Some real-world gains from migrating to Rspack 👇
Rspack retweeted
rsbuild-plugin-cloudflare v0.0.1
An experimental prototype that lets you run an rsbuild dev server inside workerd, and build apps that can be deployed with the cf cli. Built on the Vite plugin's internals
Try it out with your TanStack Start apps today
github.com/james-elicx/rsbui…
Rspack retweeted
Excited to see a Cloudflare plugin for Rsbuild! Give it a try with TanStack Start and share your feedback
rsbuild-plugin-cloudflare v0.0.1
An experimental prototype that lets you run an rsbuild dev server inside workerd, and build apps that can be deployed with the cf cli. Built on the Vite plugin's internals
Try it out with your TanStack Start apps today
github.com/james-elicx/rsbui…
Rspack retweeted
In the next release, Rspack will support `codeFilter` for loaders ⚡
Run a loader only on modules containing specific code, such as a "use foo" directive.
Skip unnecessary transforms and speed up your builds
Rspack retweeted
We moved the Zephyr Cloud dashboard (1 host + 7 Module Federation remotes) from Rspack to Rsbuild 2 by @rspack_dev, then let Rsdoctor 2 drive the cleanup.
First load: 1,045 → 729 KB gzip (−30%)
Build: 112s → 90s (−20%)
15-route journey: 1,294 → 788 KB (−39%)
Numbers 🧵
Rspack retweeted
In 2025, I wrote about Rspack in Angular. 2026 update:
🔹 Now @nx/angular-rspack
🔹 i18n, SSG, HMR, SSR app engine supported
🔹 Rspack 2.0 ready
🔹 8× faster than Webpack, on par with esbuild
On Webpack with Module Federation? Look at it. On esbuild? Stay.
edbzn.dev/blog/state-of-rspa…
Rspack retweeted
You can now select TanStack Start in create-rsbuild too
TanStack CLI now supports Rsbuild! 🦀
Create your next TanStack app with:
npx @tanstack/cli create my-app
Select React → Rsbuild, and start building.
Rspack retweeted
We also see an extremely high correlation in the adoption of module federation and a product teams adoption of ai. Even pre-ai, teams who adopt federation average 3x increase in product output.
We’re also pushing Rstack and MF further within ByteDance, where we continually find and address bottlenecks in codebases with 10M+ lines of code
nitter.cf/scriptedalchemy/status…
Rspack retweeted
Rspack now powers massive codebases at some of the world’s largest companies, and feedback from these teams keeps making it better.
Engineers at Microsoft and OpenAI have contributed over 100 PRs and issues. Thank you for all the contributions!
Rspack retweeted
Since then, our app has grown significantly, but with every new Rspack release, our build times have gone down.
Every release brought performance improvements, and now our production build takes just ~40 seconds.
We save a lot of time thanks to it!
Rspack retweeted
Rspack 1.0 is only two years old, but these numbers make it feel a generation behind 🫢
I hope we’ll say the same about 2.x when 3.0 ships
Rspack retweeted
Congrats to the TanStack Start team on 1.0! 🎉
TanStack Start has the best Rsbuild support among full-stack frameworks. Looking forward to making it even better together.
TanStack Start 1.0 is officially stable! 🎉
A full-stack web framework for React and Solid, already used to build millions of apps, from Fortune 500 companies to your favorite tools and weekend projects.
tanstack.com/start
Rspack retweeted
Looks like Bun uses its own Rust type checker for type-aware linting.
We built Rslint on typescript-go for fewer type-checking surprises. That’s why Rslint is mostly written in Go.
I wish TypeScript native were written in Rust. It’d make the tooling ecosystem more unified
👀 `bun lint` and `bun format` just landed
- 600k+ lines added in one PR
- 1,000+ built-in lint rules
- Fast (of course)
github.com/oven-sh/bun/pull/…
