Hi everyone!

It's Benedikt again this week, as Sebastien is taking a break.

For me, the week's most interesting topics are not big announcements or new releases but rather subtle hints at future work (type-safe routes models coming to Remix, React Compiler coming to Expo, native intents in Expo Router), as well as some online discussions about React Suspense implementation details (display: none, and, more importantly, a pretty significant change in parallel fetching behavior with React 19).

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⚛️ React

🎥 Ryan Florence talk “Mind the Gap”

I watched this talk after hearing multiple people describing it as one of the best tech conference talks they’ve ever seen. We’re at a very interesting point in time in web development, with React 19 bringing a major shift to the React model, new JS frameworks gaining popularity, and lots of online discussions drawing distinctions and/or making comparisons to Rails and Laravel. Ryan’s talk is a really good overview of how we got here and it offers, in my opinion, a very good mental model of how to think about React 19. Also fun to see one of the creators of Remix give a Next.js demo 😉

• 💸 NL Kit — Ship AI Features Faster With JavaScript
• 🐦 Flow diagram on how to pick one of the over 30 ways to handle React state
• 🐦 React changes a component in a Suspense context to display: none !important until data fetching completes
• 🐦 Type-safe route modules coming to Remix/React Router 7
• 🐦 Significant difference in how Suspense handles parallel fetching between React 18 and 19 raises concerns
• 🗓 dotJS - 🇫🇷 Paris - June 27 - Only 2 weeks left before the conference! 10% discount with code "TWIR"
• 🗓 React Summit - 🇳🇱 Amsterdam - 14-18 June - Tickets are almost sold out. Get a 10% discount with code "TWIR".
• 📜 Weak memoization in JavaScript: I really like those “fundamental” articles. This is not about useMemo, it explains the concept of memoization from scratch (while referencing React a bunch), really helps to deepen the understanding of what’s going on under the hood.
• 📜 Creating a Reusable SubmitButton with useFormStatus: Following this article not only teaches you how to work with forms and server actions in React 19, but also how to do it using progressively enhanced forms.
• 📜 Lingui with React Server Components: Tutorial on how to internationalize a Next.js App Router app (incl. RSC) using Lingui.
• 📜 Next.js security checklist: Useful checklist covering 7 areas, some very obvious (update dependencies, sanitize inputs), and others a bit more specific (avoid exposing server code, use security headers).
• 📜 Hydrogen - June 2024 Release - Optimistic cart, RichText component, stable analytics: Apart from these three features announcements, the post starts with a repeated commitment to Remix (aka React Router 7), in case you were wondering.
• 📜 Astro - Starlight (the Astro-based documentation builder) turns one year old: Pretty impressive stats: 24 minor releases, 181 contributors, 2,000 commits, 4,000 GitHub stars, and 2,700 open-source Starlight sites.
• 📜 Astro - Zero-JavaScript View Transitions: Chrome 126 just shipped support for native, app-like animations between page navigation.
• 📜 The Need for Speed: A Quick Way to Improve React Testing Times
• 📜 Interactive dropdown menus with Radix UI
• 📜 How to render zoomable image with Shadcn UI and Tailwind CSS in Next.js
• 📜Storybook - Interactive story generation
• 📜 How to Build a Notification System in Next.js with Knock
• 📦 Code Hike + Remotion example: Neat combination to create animated code videos (🐦 Demo video).
• 📦 @xstate/store 1.0.0
• 📦 @tanstack/query 5.44.0: Brings a “staleTime” function, e.g. to derive stale time from cache-control headers.
• 🎥 Theo - React Compiler: It's Stranger Than You Think
• 🎥 Ben Holmes - The problem with server actions
• 🎥 Jack Herrington - Radix Themes: Awesome New Components For NextJS
• 🎥 Syntax - What's new in the world of React? - React Conf 2024 Recap

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📱 React-Native

This section is authored by Benedikt.

• 💸 WithFrame - Ready to Use React Native Components
• 👀 Expo adds experimental React Compiler support
• 👀 Expo Router +native-intent Demo
• 🐦 Skia Video is coming to the web, too
• 🐦 Lorenzo leaving Microsoft and React Native: Thanks Lorenzo for all your contributions to RN and it’s community as a long-time core maintainer, and best wishes for whatever comes next!
• 🗓 Chain React Conf -  Portland, OR - July 17-19. The U.S. React Native Conference is back with engaging talks and hands-on workshops! Get 15% off your ticket with code “TWIR”
• 📜 Apple Vision Pro: Insights From Conferences and Beyond
• 📜 Now that I can write React Native, what should I test: A beginner’s journey into unit and integration tests with React Native. Next, do end to end testing!
• 📜 How Starlink built 3d and AR in React Native & Expo: Summary of Aaron’s talk at App.js conf. Read this if you insist on text, but I’d recommend watching the original talk.
• 📜 How Belka built the MangaYo! app in just 3 months with Expo: Built using Expo and Supabase in 3 months, hit no 5 of the App Store charts on launch.
• 📜 Flatlist Rendering Techniques: I mostly reach for FlashList directly, but if you somehow can’t or don’t want to use this, here’s how to optimize rendering of the classic FlatList.
• 📦 react-native-app-clip 0.3.0 - Now supports Expo 51, RN 0.74, New Architecture, and Apple Pay
• 📦 @rn-tools/navigation: New set of set of navigation components for React Native.
• 🎙️ RNR 299 - What to Expect From React Native in 5 Years
• 🎙️ React Conf 2024 Highlights: Speakers Interviews | The React Native Show Podcast #38
• 🎥 Expo livestream - Presenting SDK 51: New Architecture, Router 3.5, Faster 'getting started' flow and more
• 🎥 Simon Grimm - Building a Local-First React Native App with PowerSync and Supabase

🔀 Other

• 📜 WebKit in Safari 18 beta - View Transitions, Style Queries, WebXR...
• 📜 How Deep is Your DOM?
• 📜 Find slow interactions in the field
• Your Node is Leaking Memory? setTimeout Could be the Reason
• 📜 Comprehensive guide to JavaScript performance analysis using Chrome DevTools
• 📦 TypeScript 5.5 RC
• 📦 Valibot v0.31.0 is finally available
• 📦 Vite 5.3.0-beta.2

🤭 Fun

See ya! 👋