Jiahan Chen

🚀 Rstest 0.12.4 adds screenshot assertions. Catch visual regressions for pages and elements in Browser Mode. Compare against PNG baseline and inspect pixel diffs on mismatch.

Excited to see a Cloudflare plugin for Rsbuild! Give it a try with TanStack Start and share your feedback github.com/james-elicx/...

We moved the Zephyr Cloud dashboard (1 host + 7 Module Federation remotes) from Rspack to Rsbuild 2, then let Rsdoctor 2 drive the cleanup. First load: −30% gzip Build: 112s → 90s 15-route journey: −39% Numbers 🧵

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

You can now select TanStack Start in create-rsbuild!

We started Rsdoctor by visualizing build data for human developers. Now AI agents do much of the optimization work, so we’re making Rsdoctor more agent-friendly by giving them access to that data through our CLI

🦀 Rsdoctor 2.0 is here! ⚡ 40–60% faster analysis 📦 56% smaller install size 🤖 Agent-driven build analysis 🧩 One report for multi-compiler builds Explore what’s new 👇 rsdoctor.rs/blog/release...

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

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/...

Less duplicate code. Smaller bundles. 📦 We've improved Rspack's chunking algorithm to reduce duplicate modules across chunks. In a large production project, this change resulted in: • -2.53% raw JS size • -1.51% chunks

Lots of “OSS is dead” talk lately. Being a maintainer can feel like more stress than fun, so seeing these numbers grow is a nice little boost to keep going

A small milestone: 10M weekly downloads for Rspack Thank you for building with us ❤️

We’re putting more focus on memory usage in Rspack and Rsbuild, especially for large codebases or when running multiple agents in parallel. Recent optimizations reduced peak dev memory by 19.5% in one large project, with faster startup and rebuilds too

Codex also made circular versions of our Grokbot-style avatars. Available in our design resources repo: github.com/rstackjs/rst...

🦀 Rstest 0.12 is out! More you can test, and faster ways to run it. 🎭 E2E testing with @rstest/playwright 🧩 Test Module Federation remotes ⚡ vmThreads / vmForks: 9.5× faster on a 2,400-file suite 📦 jsdom / happy-dom load faster out of the box 🛠️ New JavaScript API for tools

We recently upgraded an internal monorepo from Rspack v1 to v2. Build time dropped ~45% Then we noticed the repo had added 4 million lines over the past 6 months. About 80% was TS, mostly written by agents Still plenty to do to keep Rspack and JS tooling fast enough for agents

🦀 Rslib 1.0 is here! 📦 Multiple output formats, including Module Federation 🔀 Bundled or bundleless ⚛️ Component libraries across frameworks 🎨 Built-in CSS and asset support 🔵 TypeScript 7 support for fast declarations See what's new in Rslib 1.0 👇 rslib.rs/blog/v1-0

🤩 trilon.io/blog/nestjs-...

Interesting to see ESLint exploring a unified JS/TS parsing toolkit. Our approach in Rslint is to treat the TS 7 parser/compiler as the single source of truth. Linting and type checking share the same program, so each file only needs to be parsed once, and its AST can be reused

And Rstack ecosystem keeps shipping: 🦀 Rsbuild — Solid v2 support, Octane template 🦀 Rstest — Playwright E2E, Module Federation 🦀 Rslint — 500+ native rules, JS API 🦀 Rslib — TypeScript 7 support, v1.0 soon 🦀 Rspress — 100/100 agent-friendly score

🦀 Rspack 2.2.0 is out! 30+ performance optimizations: ⚡ Production build ~5% faster 🎨 CSS parsing 3.7× faster 📁 CopyRspackPlugin 3–4× faster 🔥 HMR skips unnecessary CSS ~385 → ~6 ms rspack.rs/blog/announc...

Already using the Rstack Agent Plugin. Nice to see Codex automatically reach for the Rspress custom theme skill when I asked it to tweak my site’s UI

Our designer is cooking up some fun new logos for the little crabs 🦀

GitLab plans to replace webpack with Rspack as the single engine across dev, prod, and CI 👀 Benchmarks results: 🍃 Prod build: 26× faster 🍃 Dev startup: 7× faster 🍃 Emitted JS: 25% smaller 🍃 Peak memory: 23% lower gitlab.com/gitlab-org/g...

Just noticed that Slack is using Rspack v2 Less than 4 months since launch, v2 already accounts for 30% of Rspack downloads and 40% of Rsbuild downloads Adoption is moving fast 🚀