neverland

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.

Haven't seen any attempts yet, but it would be really interesting!

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 1.6 - Rspack Fast Rust-based web bundler

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 🚀

⚡ Enable native watcher for faster HMR
🔄 Refined internal structure for better performance
🌐 Move toward pure ESM packages

Rspack 2.0 aims to go beyond webpack — embracing modern standards, performance, and DX. 💡 We’d love to hear your ideas and feedback!

🚀 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

Yes, that’s right. preserveModules keeps the same file structure in the output as in your source files, similar to Rollup.

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

feat: support defer import by ahabhgk · Pull Request #11871 · web-infra-dev/rspack Summary WIP Related links [Feature]: Support for Deferring Module Evaluation (import defer) #10608 Checklist Tests updated (or not required). Documentation updated (or not required).

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...

perf(cli): switch to cac and refactor code by chenjiahan · Pull Request #11893 · web-infra-dev/rspack Summary This PR focuses on improving the code structure and performance of @rspack/cli: Replaced yargs with the lighter cac as the CLI framework Rsbuild also uses cac. This results in some minor ...

The main performance boost comes from replacing yargs with cac:
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

A Retrospective Survey of 2024/2025 Open Source Supply Chain Compromises Project compromises have common root causes we can mitigate: phishing, control handoff, and unsafe GitHub Actions triggers.

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 👀✨

perf: prebundle large dependencies by yifancong · Pull Request #1282 · web-infra-dev/rsdoctor Summary chore: prebundle big pkgs packages list: 'body-parser', 'cors', 'dayjs', 'fs-extra', 'json-cycle', 'open', 'sirv', 'socket.io&#39...

See: github.com/web-infra-de...

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. 🥳

feat: next-rspack-binding by SyMind · Pull Request #82811 · vercel/next.js Added a new rspack directory as an independent Rust and pnpm workspace, dedicated to building Next.js Rspack bindings. It shares code with Turbopack through the next-taskless crate.

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....