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Attention: Patch your Node.js servers immediately. 🛠️

A bug in AsyncLocalStorage was causing stack overflows to bypass error handlers and take down production servers—affecting virtually every Next.js and RSC app.

The patch is live. Don't let your server go "dead."

Is useOptimistic the silver bullet we hoped for? 🧐

Colum Kelly argues that while it’s a great first-class citizen in React 19, it doesn't magically solve race conditions or transition complexity.

A must-read for anyone building high-fidelity UIs.

We aren’t just writing code for humans anymore. 🤖

Both @vercel.com and @callstack.com just dropped "Best Practice" repos specifically designed for AI agents (Cursor, Copilot, etc.).

Standardizing patterns so LLMs can optimize our React and React Native code is the new DX.

The web is getting a major power-up. ⚡️

The @astro.build team is officially joining @cloudflare.social.

The best part? Astro stays open-source, MIT-licensed, and platform-agnostic. This is a massive bet on content-driven websites and the future of the edge.

Don't start your week behind the curve.

Join the developers worldwide who read React Weekly every Sunday.

Subscribe for free: 👇 react-weekly.dev

Where is React Native going in 2026?

Katarzyna Smolen from @swmansion.com predicts a massive shift toward multithreading with Worklets.

Also: The State of React Native 2025 survey is open. Go cast your vote! 🗳️

Two masterclasses from the @expo.dev ecosystem this week:

1. How to build offline-first audio tours using SQLite and layered audio. 🎧
2. Creating "Cutout" camera effects with MaskedView for high-end UI. 📸

Essential reading for mobile devs.

"I moved off Next.js."

It wasn't about the Vercel drama. @t3.gg breaks down why T3 Chat migrated to TanStack Start.

The takeaway? Sometimes you actually just need a good SPA, and the server-centric routing overhead wasn't the right fit.

The end of an era for React Native. 📱

Release Candidate 0.84 is out, and it officially removes the Legacy Architecture by default on iOS.

Fabric is no longer "the future"—it is the standard. Plus, a bump to Node v22.11.

React Conf 2025 recordings are officially public. 🎥

If you missed the deep dives on the React Compiler or the future of Server Components, now is your chance to catch up.

We've linked the essential playlist to get you up to speed for 2026.

Check us out (and find some other gems) here: 👉 tanstack.com/showcase

What are you building with TanStack in 2026? Let us know! 👇

The React ecosystem moves fast. We help you move faster.

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Mastering mobile in 2026. 📱

We feature @codewithbeto.dev's latest video: "Top 6 React Native Tips to Survive 2026."

From ditching TouchableOpacity for Pressable to leveraging native iOS form sheets, these are essential patterns for high-performance apps.

⚠️ Critical Security Advisory:

If you are using React 19 or Next.js 15/16, you need to check this. We cover the patch for CVE-2025-55183 regarding Source Code Exposure in Server Actions.

Don't let your code leak in the new year. Detailed patch notes inside.

@tanstack.com is making moves.

@tannerlinsley.com’s TanStack Start has hit 1.0 RC. 100% type-safe routing and server functions that might just make you rethink your Next.js setup.

We also dive into why TanStack AI is splitting their adapters to save your bundle size. 📦

The "Manual Memoization" era is ending.

@react.dev
- React Compiler is now the default for new templates, and
@nextjs.org
16.1 has finally stabilized Turbopack caching.

We break down what this means for your workflow and why "Component Composition" still matters more than ever.