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This Week In React 302 ⚛️ - React RCE - Next.js prefetch - React Router - DevTools MCP - shadcn AI Elements - R3F WebGPU - Hydrogen - Vinext 📱 - 0.88 - Expo 58 - RNav SVG icons - FastImage 10 - Edge to Edge - Device Hub 🍿 Read: thisweekinreact.com/newsletter/302 ✍️ @jwr.ski & I

CSS-Tricks has a new owner! Yes, I've got the keys to the castle, so to speak. And, even after 12 years of working on the site, I'll admit I'm a little overwhelmed and nervous about that. https://css-tricks.com/css-tricks-has-a-new-owner/

👀 Have you heard of this new experimental React MCP? Now officially documented here: react.dev/reference/de... Technically, it's not really an MCP ➡️ registers a group of tools to Chrome DevTools MCP

👀 GitHub Actions - Parallel steps Just gave it a try on our CI linting workflow Super easy to set up ➡️ ~25% speed improvement These are CPU/IO-bound tasks on a small/default runner I'm sure the perf increase can be even more significant depending on steps github.blog/changelog/20...

This Week In React 301 ⚛️ - TanStack Start - React Aria Sheet - Vitest RSC - MobX + Compiler - Satori Yoga -> Taffy - Next.js CVE + ESLint - Base UI 📱 - RNW - Tamagui 3 - One 2 - Skia 3 - Observe - Screens - Nano Icons 🍿 Read: thisweekinreact.com/newsletter/301 ✍️ @jwr.ski & I

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/blog/tanstac...

I spent some time playing with React Compiler to implement some optimizations. It was amazing how much performance I could gain. Makes me really want to spend more time in the frontend compiler space. So much potential performance left on the table. jimmyhmiller.com/what-does-th...

TIL about ‎.git-blame-ignore-revs Apparently, you can ask Git to ignore some commits in Git blame Useful if you reformat a lot of code at once and don't want it to pollute your Git blame with useless noise

Well well, what do we have here? Try it Chrome Canary. #CSS #AnchorPositioning #DevTools

jjenzz.com/making-react...

This Week In React 299 ⚛️ - Panda - Vinext - Next.js - Preact - Design Systems - RTK 📱 - Variable Font - Activity Result - Lynx - Lucent - macOS - Plain Text - RNav - Angular Native 🍿 Read: thisweekinreact.com/newsletter/299 ✍️ @jwr.ski & I

Preact 11 is out 🎉 We’ve been hard at work at making our diffing use modern features like moveBefore , leveraging ESM for tree-shaking Preact Compat and ensuring you have a great experience with resumed hydration.

Incredible news 🤯🎉

👀 A11y update Element.ariaNotify() -> now Baseline Widely Available Triggers a screen reader announcement programmatically Now in all modern browsers (latest versions) -> for now, it can only be a progressive enhancement

👀 AbortController update - AbortSignal.any() -> now Baseline Widely Available - AbortSignal.timeout() -> will be very soon (2.5 years in all browsers) (also in all server runtimes)

This Week In React 297 ⚛️ - DevTools - Motion - Apollo - React Router - React Hook Form - shadcn lint 📱 - Shopify - Expo 58 beta - ExecuTorch - Screenmap - Lynx - Stim - Voltra 🍿 Read: thisweekinreact.com/newsletter/297 ✍️ @jwr.ski & I

💡 JSPI = JavaScript Promise Integration for WebAssembly "Await for Wasm code" Now in all browsers 🎉 Recently added to Safari and Firefox Looks like an important primitive for native languages C/C++/Rust, etc compiling to Wasm

💡 OpaqueRange is nice This inspired me this universal syntax highlighter that works with a gpu model to highlight a <textarea> The fun part is that you can mix multiple languages within the same <textarea> 🤪 github.com/slorber/gpu-...

You are absolutely right, Codex!

👀 React Native 0.88 + React 19.3 🎉 The React version upgrade was recently merged into main The 0.88 branch is already cut, RC.0 already released The commit was cherry-picked so it should still be included 👍

👀 React DevTools v8.0 Now available on Chrome Web Store chromewebstore.google.com/detail/react...

👀 These JS features -> now Baseline Widely Available: - Object.groupBy() / Map.groupBy() - Promise.withResolvers() - Element.checkVisibility() - ArrayBuffer.transfer() Available in all browsers since March 2024

IMHO this choice is questionable, we'll see soon 🤪 Worth reading why RN remains relevant here: x.com/aleqsio/stat...

This Week In React 296 ⚛️ - React 19.3 - DevTools - Next.js chunking - cn - 3D Maps - Effective-RSC - Vidact - Unified Flow 📱 - 0.88 RC - Expo Modules v2 preview - RN QuickJS - Goldie - ContinuedTask 🍿 Read/subscribe: thisweekinreact.com/newsletter/296 ✍️ @jwr.ski & I

React 19.3 is now available! This release makes View Transitions and Fragment Refs stable, and adds browser(), Trusted Types support, and Context in Server Components. react.dev/blog/2026/09...

It's here!!!

This Week In React 296 ⚛️ - React 19.3 - DevTools - Next.js chunking - cn - 3D Maps - Effective-RSC - Vidact - Unified Flow 📱 - 0.88 RC - Expo Modules v2 preview - RN QuickJS - Goldie - ContinuedTask 🍿 Read/subscribe: thisweekinreact.com/newsletter/296 ✍️ @jwr.ski & I

🚨 React v19.3 is out! TLDR: - <ViewTransition> → stable - Fragment Refs → stable - use(browser()) to opt out of SSR - RSCs can render <Context>, no <Provider> wrapper needed - Trusted Types support, useful alongside CSP to prevent XSS 🔗 react.dev/blog/2026/09...

Oups, forgot to post the demo video 😇