Hi everyone!

This week, TypeScript 5.1 is released in beta with many improvements related to JSX and React!

React-Query plans to remove query callbacks in version 5, and this idea does not please everyone.

For React-Native developers, don't miss React-Native-Connection on June 1st in Paris! I participated to the talks selection committee, and we just published the complete line-up with international and local speakers. 10% discount with the code "REACTHEBDO".

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⚛️ React

TypeScript 5.1 (beta) + React

An important TypeScript release that will allow React to be able to declare its own valid JSX types. It is planned to use this new feature as soon as possible in React typedefs, which have already been forked to continue to support older versions (TypeScript <= 5.0).

There are good reasons to adopt TypeScript 5.1+ as soon as possible. It unlocks among other things:

• the ability to use a React Server Component async in JSX without TypeScript errors or workaround.
• the ability to return all valid types for ReactNode (string, array, boolean...) without needing a fragment (details).
• other interesting improvements around JSX: namespaced attributes and linked editing (VSCode).

Breaking React Query's API on purpose

React-Query will remove the callbacks (onSuccess, onError, onSettled) from the useQuery hook with v5. Dominik explains this choice and suggest alternatives more adapted to common cases, like displaying a toast. A controversial but necessary decision because these APIs were often misused. Note: callbacks are kept for useMutation.

• 🧵 Dan Abramov - "good rule of thumb. for any “server components”: explains the minimum requirements for a proper Server Components implementation, taking full advantage of their potential. Presents the limitations of Qwik and Remix models.
• 👀 Dan Abramov has a "story to tell" at Remix Conf ("React from Another Dimension")
• 👀 Next.js ships its own copy of React: copy used only when using App Router.
• 👀 Use Storybook with Rspack
• 👀 WebGPU in React-Three-Fiber demo
• ⚡ SpiderMonkey Newsletter (Firefox 112-113): "We’re working on improving performance for popular web frameworks such as React".
• 📜 Animating View Transitions: explains how to use the new View Transition API (Chrome 111+) in a React context with Next.js App Router, and in a MPA context. Interesting, but the proposed React integration doesn't look ideal.
• 📜 An Animated Guide to Reacts Optional Parameters: interactive article that presents some features of React APIs that we use less often.
• 📜 Next over Remix: feedback from a dev who had planned to switch to Remix, but finally stayed with Next.js.
• 📜 Building a blog with Next.js 13 and React Server Components: uses all the latest Next.js features to create a modern blog.
• 📜 React forwardRef(): How to Pass Refs to Child Components
• 📜 Is React the New WordPress?
• 📜 Becoming an Astro maintainer
• 📜 Display Warning for Unsaved Form Data on Page Exit
• 📜 Mastering React: Techniques to Take Your UI to the Next Level
• 📜 What's new in the new Storybook
• 📜 Full-stack Web Apps Without React
• 🎥 Must Know React Portability Patterns: good advices to reduce coupling of your code to a particular framework.
• 🎥 Maybe Create React App Isn't Dead?
• 📦 Ariakit 0.1.0: new way of managing state based on component stores. Motivations in this RFC: less re-renders, becoming framework-agnostic...
• 📦 Million.js 2.2.1 - Support for hooks and non-primitives. This thread gives interesting explanations about the difference between React and Million reconciliation.
• 📦 OpenNext 1.0: aims to make Next.js more portable thanks to serverless adapter.
• 📦 Astro 2.3
• 📦 React-Three-Next - starter updated - App Router support
• 📦 React-Three-Fiber AutoFocus DOF

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📱 React-Native

• 👀 Hover gesture coming soon to React Native Gesture Handler: future cross-platform API with support for iOS, Android, web.
• 👀 Image perf demo: shows the bad perf impact of using too large images on your React-Native apps.
• 📦 Expo-Image 1.2.0 - ThumbHash support
• 📦 React-Native-Widget-Extension
• 📦 AnimateReactNative: more than 100 animations by Catalin Miron (paid product).
• 🧵 Expo Docs Updates
• 🧵 Jamon Holmgren - "Want to know how easy it is to grab API keys out of a compiled iPhone app?"
• 🎥 Song of Bloom - “Can it be done in React Native?”
• 🎥 React Native File Based Routing with Expo Router
• 👥 React-Native-Connection (Paris, 1er June) is offering us -10% on entries (code "REACTHEBDO").
• 👥 App.js (Krakow, May 10-12) is offering us -20% on workshops (code "ThisWeekinReact20").
• 👥 Chain React (Portland, May 18-19) is offering us -10% on entries (code "thisweekinreact").

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We have several roles open for developers focused on React Native! Pay is ~160k plus 10% bonus. You must have production experience with RN and be based in the US. DM @gabe_g2i to learn more and don't forget to mention This Week in React.

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🔀 Other

• Node.js 20 Now Available: with stable test runner, permission model, compiling to executable binary...
• pretty-ts-errors: great idea to improve the TS DX in VSCode.
• total-typescript/shoehorn - Partial mocks in TypeScript
• Chrome ships WebGPU: in Chrome 113+.
• WebGPU Fundamentals
• Turborepo 1.9

🤭 Fun

See ya! 👋