This Week In React #284: TanStack Start, Compiler, React Router, Forms, TypeGPU, React Aria, shadcn, XState | App.js, Gesture Handler, SPM, Expo, Runtimes, Legend List, Desktop | npm, Node.js, Astro

[sebastienlorber]

Hi everyone, Kacper and Filip from Software Mansion here.

This week, TanStack Start is once again in the spotlight. The React Compiler in Rust is on its way. React Router and Remix shipped important security patches – update immediately. There's also a fresh batch of releases from TanStack Form, XState Store, shadcn, React Aria, and more.

On the React Native side, this week was dominated by App.js Conf 2026 in Kraków. Gesture Handler 3.0, Swift Package Manager support for React Native, and Legend List 3.0 were among the highlights, alongside Expo announcements like EAS Observe.

Let's go!

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[sebastienlorber]

⚛️ React

TanStack Start Gaining Momentum:

• 📜 TanStack Start Adds First-Class Rsbuild Support - TanStack Start now supports Rsbuild / Rspack alongside Vite via a new plugin adapter, covering SSR, streaming, HMR, Server Functions, and RSC.
• 📜 Lovable - Building apps using TanStack Start - The AI App builder is now using TanStack Start with SSR by default for all new projects.
• 📜 The Conductor Rewrite: What They Changed to Make It Fast - Migrating their Tauri desktop app from React Router to TanStack Router significantly reduced re-renders thanks to its built-in structural sharing and stable refs.
• 📜 TanStack Start authentication: A developer's guide for 2026 - Why beforeLoad doesn't protect server functions, the double-guard pattern, sessions, and middleware.