⏰ Rspack 1.7 is coming tomorrow. The last minor release before 2.0.

In the next release, Rsbuild's error overlay can now show runtime errors. When your app throws at runtime, the error appears instantly in the overlay, helping you locate problems sooner. Opt in using `dev.client.overlay.runtime = true`.

The SWC parser is now 65% faster than 6 months ago and 104% faster than a year ago🚀 Huge kudos to @kdy1.bsky.social and @c_punisher 👏

In the next release, Rspack adds support for the new Import Bytes proposal:

From a blog post by the Mews team: "Migrating from Webpack to Rspack completely transformed our frontend developer experience. Builds that once took five minutes now finish in under one, and hot reloads that used to take over ten seconds now feel instant."

JupyterLab switched to Rspack 🎉 5× build speedup on CI github.com/jupyterlab/j...

Rspack v1.6.7 is out: ✨ Support for import.meta.resolve ✨ Support for import.meta.dirname ✨ Support for import.meta.filename 📍 Relative source map paths 🛠️ 10 bug fixes

In the next release, Rsbuild adds a new "printFileSize.diff" option to show size changes between the current build and the previous one.

Storybook CLI now auto-detects Rsbuild projects and installs deps like storybook-react-rsbuild for you. Huge shoutout to the @storybook.js.org team!

In the next release, Rspack will generate a more compact module factory format that trims the wrapper function. Benchmarks show this reduces bundle size by about 1% before gzip, though the effect after gzip is minimal. 😉

Rspress v2 RC is live across all Rstack sites. 🎉 A few fixes are in progress. The final release will ship once everything is polished.

10 million monthly downloads. Huge thanks to everyone trusting Rspack. ❤️

Rspack has tons of complex tests. We just migrated from Jest to Rstest and saw about a 30% speed boost. ⚡️ If you’ve been thinking about trying Rstest, now might be a good time to give it a shot.

In the next release, Rspack's source map generation is 30% faster 🚀

create-rsbuild now automatically generates an AGENTS.md file to help coding agents develop better. 🤖 Still early, but we'll keep improving it and bring AGENTS.md to all Rstack scaffolds soon.

The next step is to kick off Rspack 2.0. 🦀 Some of its upcoming changes will be available early in Rspack 1.7 via feature flags.

Announcing Rspack & Rsbuild 1.6 🦀 🌿 Support for import defer 🌿 Enhanced tree shaking 🚀 Barrel optimization by default 🚀 Performance improvements 📦 Improved ESM output 📦 Forward browser logs rspack.rs/blog/announc...

Rspack 1.6 drops tomorrow 🚀

🚀 Rspack 2.0 roadmap: 🗓️ First preview planned for Feb 2026 🧩 Refined webpack outputs & APIs — cleaner and simpler 📦 Better ESM output, with out-of-the-box support via Rsbuild & Rslib ⚛️ Built-in RSC support (thanks @parceljs's exploration ) 💾 More stable persistent cache, aiming for default in dev

Rspack 1.6.0-beta.1 just dropped: 🧩 support for "import defer" ⚡ builds up to 10% faster ⚡ CLI startup faster by 50–70 ms 📦 preserveModules like Rollup 🕓 1.6 stable coming soon

Here we are ~ ❤️🎉 🌱 Vue Vine has further enhanced support for the Rsbuild plugin, hoping that users of Rsstack will enjoy using it ~ @rspack.dev

An implementation of TC39 Stage 3 Import Defer is being worked on in @rspack.dev by @ahabhgk.bsky.social 🎉 This is a performance feature that enables lazy execution of JS modules ⚡ webpack already has (partial) support, so it makes sense for Rspack to achieve parity. github.com/web-infra-de...

In the next release, @rspack/cli is 40–60 ms faster:

🚀 Rspack 1.6.0-beta.0 is out! ✨ Improved ESM library output (experimental) ✨ Improved MF runtime plugins ⚡ Barrel optimization by default 🗺️ Extract existing source maps 🧩 Stabilized layers 🐞 10+ bug fixes

Replaced our frontend bundling tooling at work with rspack and bun and Im seeing a 70x speedup in builds. Good lord.

Rsbuild dev server got a small boost: ⚡️ Startup 10-20 ms faster ⚡️ HMR 5-10 ms faster

To implement robust mitigations across Geomys, I did a survey of open source project compromises in 2024/2025. Three root causes dominate: phishing, control handoff, and unsafe GitHub Actions triggers. All three can be systematically avoided. words.filippo.io/compromise-s...

Rsbuild spotted at React Conf 👀✨

The Rspack team is off for a week 🌴 See you soon — we’ll return refreshed and start shaping Rspack 2.0 🦀

Rsdoctor install size reduced from 22.6 MB → 15.7 MB in v1.3 — ~30% smaller & faster installs 🚀

In the next release, Rsbuild will forward browser errors to your terminal — giving your coding agent more context 🤖

Rspack v1.5.7 is out! 🍃 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. 🥳

Freshly merged: Next.js with custom Rspack binding unlocks 10%+ faster builds. Performance will keep improving as more code is ported to Rust. github.com/vercel/next....

Rslib v0.13.3 is ~100ms faster from a tiny change: Swapping import "typescript" with require('typescript'). It skips Node's cjs-module-lexer overhead. 😅

We should make this

Tried out Rslib with tsgo… my package builds got 2.5x faster 🔥 Now I work with tsgo locally, but CI runs on TypeScript 5.x — more stable that way.

Rspack v1.5.3 is out! ✨ Advanced tree-shaking for dynamic imports 🌐 Module Federation support in @rspack/browser 🚀 Faster bundle splitting 🐞 11 bug fixes

Just getting started 🎉

This is a collection of @rspack.dev and RSBuild plugins rolled up into a single rsbuild plugin to enable running of @reactrouter.com's RSC mode in RSBuild. It supports - `import with { env: "react-server" }` - `use client` - `use server` It needs - code splitting - action encryption - css handling

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. 🚀

Great benchmark! We're continuously optimizing Rspack for faster builds and smaller bundle sizes. It's worth noting that webpack/Rspack produce larger bundles in this case due to different handling of dynamic require() in moment.js, see github.com/filipsobol/b...

This is the BEST Rspack release yet, loving it 🥰

Rspack v1.5.0 is out! 🎉 ⚡️ Barrel file optimization ⚡️ Faster file system watcher ⚡️ Smaller installation size 💪 Extending Rspack with Rust 💪 Type re-export analysis And many exciting new features... Read more in our blog: rspack.rs/blog/announc...

Rspack 1.5 coming soon 🦀

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.

Rspack 1.5 will support the "using" declaration. This enables the explicit resource management feature in ECMAScript, making resource cleanup more straightforward ✨

As we look forward to TypeScript being ported to Go, it raises the interesting prospect of a new stack of tooling that integrates natively on top of it. ESBuild uses Go, but it is fully separate from TS Go. Whereas Rslint is an example of a new Go-based linter with direct integration 🔥

Rslint logo is a little crab holding a ruler, because linter is all about rules 📏