This week is rather quiet in the React world, so we took a step back on Vinext, found great community blog posts, and weak signals.

On the React Native side, let’s welcome our new author, Jan Jaworski, who covered the new Expo SDK and the State of React Native survey results, among many other things.

Let's dive in!

As always, thanks for supporting us on your favorite platform:

• 🦋 Bluesky
• ✖️ X / Twitter
• 👔 LinkedIn
• 👽 Reddit

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⚛️ React​

What is Vinext really worth?

Last week, we covered Vinext, Cloudflare’s AI-driven reimplementation of Next.js on top of Vite. Now that the dust has settled, let’s see what the community and the Next.js team have to say.

• 🔐 Vibe-Hacking Cloudflare's Vibe-Coded Next.js Replacement - Show that AI-generated code passing functional tests can still miss security hardening, and automated AI tooling can help find those vulnerabilities.
• 🐦 Guillermo Rauch - “We've identified, responsibly disclosed, and confirmed 2 critical, 2 high, 2 medium, 1 low security vulnerabilities”
• 🐦 Jimmy Lai mentions that Vinext’s 94% API coverage is misleading - In reality, Vinext only passes a limited number of the 13,000+ Next.js test suite (13% dev, 20% e2e, 10% production). Many edge cases are likely misbehaving.
• 🐦 The cio.gov website using Vinext is "basically a static site" - This deployment doesn’t really dogfood the whole API surface of Next.js.
• 📖 Vercel docs - Migrate to Vercel from Cloudflare - It’s no secret that Vercel/Cloudflare CEOs do not like each other. The timing of this newly published docs page feels… noteworthy.
• 🎥 Fireship - Cloudflare just slop forked Next.js

While the AI-generated port is undeniably impressive, it’s likely too early to adopt it in production. It also remains unclear whether Cloudflare intends to support the project over the long term and make it production-ready.

• 💸 Next.js minifies your code into mush. Source maps fix that. Learn how to wire up Sentry so your stack traces are actually readable
• 📣 Linux Foundation Announces the Formation of the React Foundation
• 👀 React.dev PR - Add RSC Sandboxes - The React docs website has merged infrastructure to run full-stack interactive playgrounds. However, it hasn’t been used on any public page yet. The server-related features (RSC, async components, use, Suspense, Server Functions, Actions, streaming) run locally in a Web Worker.
• 👀 Oxlint + React Compiler Rules integration demo - Oxlint supports loading ESLint plugins via the jsPlugins, so technically it can run the React Compiler rules too.
• 📖 <ViewTransition> docs - New example - Animating enter/exit with Activity
• 💬 Next.js issue - Server requests and latency increased after upgrading from Next.js 15 to 16 - Users noticed an increase in server requests after upgrading. Andrew explains this is due to a new fine-grained segment prefetching system that maximizes caching efficiency. A new prefetchInlining flag is coming to give you control over this behavior until they implement a sensible heuristic.
• 💬 Devon from React Aria explains the limits of the native <dialog> vs JS/React abstractions
• 🗓 React Summit - 🇳🇱 Amsterdam - 12 & 16 Jun. Join thousands of React devs live in Amsterdam or online. Learn from top contributors and enjoy the festival-style vibes! Register now using promo code TWIR (-10%)
• 📜 Error rendering with RSC - Great deep-dive into how errors flow through the 3 RSC rendering environments (RSC server, SSR, browser). Only the browser supports Error Boundaries, so RSC/SSR errors need a clear path to reach the client side and get displayed.
• 📜 Understanding Why React Fiber Exists - Greatly explains why React abandoned recursive reconciliation in favor of the Fiber architecture, making it possible to pause rendering and accept new user inputs.
• 📜 React is changing the game for streaming apps with the Activity component - Practical use case for <Activity> to preserve playback state when hiding video/audio players. Don’t forget to pause the player using an Effect cleanup function.
• 📜 Frontend Memory Leaks: A 500-Repository Static Analysis - A study scanned 500 repos across many frameworks and breaks down the results. Gives an overview of the most frequent React-related memory leaks, notably the lack of a useEffect cleanup function.
• 📜 Create a Per-Request Database Instance with React Router Middleware - Shows how to wrap each request in a database transaction.
• 💸 Certificates.dev - Validate your cross-stack capability with a comprehensive Certification for Laravel. Limited-time launch offer: 40% off!
• 📦 TanStack Store 0.9 - API breaking changes, using faster alien-signals library
• 📦 Vite Plugin React beta.0 - Drop Vite 7 support, remove Babel dependency
• 📦 Next-translate 3.0 - Turbopack, Next.js 16, and a New Chapter
• 📦 React-Admin 5.12, 5.13, 5.14 - February 2026 Update
• 🎥 Jack Herrington - TanStack Start SSR: 3 Reasons To Love It
• 🎥 Josef Bender - New TanStack Package: Exclusive First Look
• 🎙️ This Month in React 2026-02 - CloudFlare remakes Next with AI; Vercel big mad. We talk too much about AI Agents

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📱 React-Native​

Expo SDK 55

Expo SDK 55 is out now as a stable release! It brings React Native 0.83, React 19.2, Expo Router 55, and a massive amount of improvements across the entire ecosystem.

React Native 0.82 & 0.83 Highlights:

• The New Architecture is now a requirement. You can try out new AI skills to help you with the update process.
• React 19.2 Integration: Brings the new <Activity> API (for preserving state in hidden component trees) and useEffectEvent.
• DOM Node APIs: Native components now provide DOM-like nodes via refs, allowing you to traverse the UI tree and measure layouts just like on the web.
• Revamped DevTools: A brand-new DevTools desktop app that no longer requires a browser, featuring dedicated Network and Performance panels. Web Performance APIs are also now stable.
• Optimized Android Debugging: A new debugOptimized build type speeds up your dev environment, allowing animations and re-renders to hit ~60FPS while still allowing JS debugging.
• Experimental Hermes V1: Available as an opt-in, bringing meaningful performance improvements for bundle loading and Time to Interactive (TTI).

Expo SDK 55 Highlights:

• Expo Router v55 with Native Features: Added support for the native Apple Zoom transition, a new iOS Stack.Toolbar API, experimental SplitView, and a new Colors API for dynamic Material 3 and adaptive iOS colors. Yes, the versioning scheme has changed: it’s v55, not v7.
• AI Tooling: You can try out new AI skills to help you with the update process. Expo also introduced Model Context Protocol (MCP) tools for CLI actions/EAS services, alongside the official expo/skills repository.
• Developer Experience: A small but welcome improvement is the ability to discover active dev servers on iOS with no QR code scanning needed!
• Smaller OTA updates: ship up to 75% smaller OTA updates thanks to Hermes bytecode bundle diffing.

This release also shapes the future of video in React Native. The legacy expo-av module has been removed and replaced by expo-video & expo-audio, which feature an improved API, synchronous calls, and better state management with atomic state updates.

State of React Native 2025

The results for the State of React Native 2025 survey are officially out! This year marks the 10th anniversary of React Native, alongside hitting a massive milestone of 4 million weekly downloads (double last year's numbers!). The ecosystem is maturing rapidly, and the survey reflects a highly positive shift in the overall developer experience. Software Mansion devs break it down on their YouTube channel.

Here are some of the highlights that we’ve found interesting:

• The New Architecture Era: The New Architecture is now the default and has already reached an impressive ~80% adoption rate. Combined with recent React Native releases shipping with zero user-facing breaking changes, the dreaded "upgrade pain" is finally fading into the past.
• Navigation: React Navigation and Expo Router dominate the space. While deep linking and TypeScript inference remain the top developer pain points, upcoming updates (like React Navigation 8) are specifically targeting these exact issues. We are also seeing a massive push toward new native primitives like native tabs, split views, and zoom transitions.
• Styling: The community is heavily leaning into Tailwind-style utility classes (NativeWind) and react-native-unistyles. While the "lack of a standard CSS API" was a top complaint, React Native is rapidly closing the gap by shipping web-compatible features natively—like box shadows, gradients, and CSS filters—with more on the way.
• Graphics & Animations: React Native Reanimated remains the undisputed king of animations, with developers highly praising the new Shared Element Transitions. Meanwhile, React Native Skia is maturing fast, empowering developers to build much more ambitious and performant custom graphics without native code.
• Community Stewardship: With the recent launch of the independent React Foundation (hosted by the Linux Foundation), the future stewardship of React Native looks incredibly stable.

• 💸 PostHog - Monitor and debug errors in your React Native app with crash reporting and stack traces. 100k exceptions free every month
• 📊 State of Subscription Apps 2025: Revenue by mobile app framework shows that React Native apps perform the best in earnings.
• 👀 Vision Camera 5 preview - The upcoming release now has a dedicated documentation section detailing its new features.
• 💬 AbortController RFC - A proposal to better align React Native's implementation with the web standard and support the missing APIs.
• 🐦 RNRepo now supports iOS - Faster build times thanks to pre-built library artifacts.
• 🐦 React Native Worktree skill - enables multiple agents to use simulators without conflicts
• 📜 Sparkling: The Missing App Layer for Lynx.js? - The Callstack team explores the previously mentioned Lynx framework.
• 📜 Building reliable AI Chat on mobile - An insight into the challenges of building a great user experience for mobile AI chat interfaces. Also announcing a FlatList-compatible library to address these challenges.
• 📜 Expo UI tips - Non-obvious solutions and techniques to make your app make use of native features to look and feel better.
• 📜 React Native Monorepo with PNPM Workspaces
• 📦 @native-html/render - Render HTML as native views - This old package has been refreshed and is now officially maintained by Software Mansion.
• 📦 Grab - Touch-to-grab context tool for React Native UI changes - Similar to React-Grab on the web, this convenient tool permits giving accurate context to LLMs.
• 📦 Nitro 0.34, and Nitro 0.35 with an API breaking change to fix a memory leak issue.
• 📦 Enriched 0.5 - HTML normalizer, preserve rich formatting, and more
• 📦 Enriched Markdown 0.3 - RTL support, GFM support (tables, task lists, and autolinks)
• 📦 Brownfield 3.0 - New Expo Config plugin
• 📦 Maestro CLI 2.2 - Visual Testing capabilities
• 📦 Metro 0.84.1 - HTTPS support in Metro server
• 📦 Uniwind 1.4 - Scoped theme
• 📦 Boost 1.0 - A Babel plugin that automatically optimizes your apps
• 📦 Agent Device 0.7 - TV support, push notifications, clipboard commands, network dump, dogfood skill
• 🎙️ React Native Radio 354 - React Native Screens with Krzysztof Magiera - Deep dive and sneak peek into the upcoming 5.0 rewrite built exclusively for the New Architecture.

🔀 Other​

• 👀 TC39 - Agenda for the 113th meeting - 10-12 March - Next week, major proposals such as Temporal and Explicit Resource Management could move to stage 4.
• 📣 Navigation API - a better way to navigate, is now Baseline Newly Available - The modern alternative to the History API is ready for prime time. Part of Interop 2026, the remaining browser incompatibilities should be fixed by the end of the year.
• 📣 Announcing npmx: a fast, modern browser for the npm registry
• 📦 Firefox 148 - Unlocks cross-browser support for CSS shape(), position-try-order, and Trusted Types to prevent XSS attacks. Speaking of XSS, Firefox is also the first browser to land the new Sanitizer API and setHTML().
• 📦 Bun 1.3.10 - New REPL, ES decorators, faster event loop, barrel optimization, and more
• 📦 Deno 2.7 - Temporal API, Windows ARM, and npm overrides
• 📦 Solid 2.0 beta - Async is first‑class, computations can return Promise, the graph knows how to suspend/resume
• 📦 Better Auth 1.5 - New CLI, OAuth 2.1 Provider, Electron integration, i18n support, and more

🤭 Fun​

See ya! 👋

The React Foundation officially launched. Cloudflare rebuilt the whole Next.js in a week using AI. In the meantime, the real Next.js is adding version-matched docs so agents always have context on new and recently updated APIs.

On the React Native side, Hermes is moving beyond mobile: Hermes-node brings the engine to Node.js as a potential V8 swap. CSS Grid is also coming to React Native, and TanStack Router has an early PoC running natively.

Let's dive in!

As always, thanks for supporting us on your favorite platform:

• 🦋 Bluesky
• ✖️ X / Twitter
• 👔 LinkedIn
• 👽 Reddit

💸 Sponsor​

Still writing tests manually?

Notion, Dropbox and LaunchDarkly have found a new testing paradigm - and they can't imagine working without it. Built by ex-Palantir engineers, Meticulous autonomously creates a continuously evolving suite of E2E UI tests that delivers near-exhaustive coverage with zero developer effort - impossible to deliver by any other means. 

It works like magic in the background:

• Near-exhaustive coverage on every test run
• No test creation
• No maintenance (seriously)
• Zero flakes (built on a deterministic browser)

🤨 Curious? Book in a time to learn more

⚛️ React​

How we rebuilt Next.js with AI in one week

A single Cloudflare engineer rebuilt the Next.js API surface (App Router, RSC, Server Actions, middleware) on Vite in one week using AI for $1,100. Using Oxc/Rolldown, it builds 4.4x and produces 57% smaller bundles. Using the Vite Environment API, it overcomes OpenNext limits, making it compatible with edge runtimes such as Cloudflare Workers.

What started as a bold experiment became vinext. It passes 2000+ tests and has 94% test coverage of the Next.js 16 API surface. The cio.gov website already runs it in production. It also introduces new concepts such as “Traffic-aware Pre-Rendering”.

This AI-driven port was only possible because Next.js has a well-documented API surface and a comprehensive test suite. A reminder of something TDD practitioners have known for years, but seems more important than ever today: the real value lies in the specification, the test suite, and the API design. Even Guillermo Rauch now believes that most software will start as markdown spec files implemented by coding agents. In Tests Are The New Moat, the author argues that we may see more open-source projects with private test suites: that’s what SQLite is already doing.

• 💸 Make React apps fast where it actually matters. Learn how to diagnose real bottlenecks and fix slow, janky React apps using modern React 19 patterns
• 📣 The React Foundation has officially launched, hosted by the Linux Foundation - React, React Native, and supporting projects like JSX are no longer owned by Meta. Huawei joined the previously announced founding members.
• 📖 Next.js - AI Agents Guide - Upcoming Next.js releases will include version-matched docs to provide agents with up-to-date context, improving Next.js Evals success rate by ~20%.
• 📜 Aurora Scharff - Building Design Components with Action Props using Async React - Pattern for encapsulating optimistic updates, pending indicators, and rollback inside reusable components
• 📜 TkDodo - Creating Query Abstractions - Using queryOptions is an alternative to hooks for achieving a reusable data object. This approach allows you to use the object even outside of React components.
• 📜 Kent C. Dodds - Migrating Remix v2 to React Router v7 with Cursor - Showcases how he used Composer for large-scale dependency upgrades completed in a day.
• 📜 React Router Loaders and Actions as Integration Points - Testing routing with business logic in isolation is tough due to complex mocking. The author suggests that mixing unit and e2e tests can solve that.
• 📜 Create a Multi-Directory Route Organization in React Router - By using flatRoutes, you can maintain a scalable structure with better logic separation in a growing React Router application.
• 📜 Removing Next.js Taught Me Why Frameworks Are Still Essential Even for AI - The author tried building with HTML and vanilla JS, then concludes that frameworks are necessary precisely because we are in the era of agents, giving them useful constraints. Note that Elon Musk predicts something different: AI will bypass coding and directly create binaries (tweet).
• 📜 React’s useTransition: The hook you’re probably using wrong
• 📜 Creating a 3D Product Grid with React Three Fiber
• 💸 Product for Engineers - 10x job posts for 10x engineers
• 📦 Ink 6.8 - renderToString(), React DevTools v7, performance caching
• 📦 Split Pane 3.2 - pointerType in ResizeEvent
• 📦 Vercel Chat SDK - Lets you build chatbots, supports JSX syntax
• 🎥 Josef Bender - Build a blog with type-safe Markdown and TanStack Start
• 🎥 Fireship - TanStack Start in 100 Seconds
• 🎥 Hamed Bahram - Master nuqs in 1 hour - URL state in NextJs with François Best

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📱 React-Native​

Hermes-node

Tzvetan Mikov from the Hermes team announced Hermes-node, a CLI version of Hermes compatible with the Node.js API. Since Hermes-node acts as a compatibility layer, it can use original Node.js module implementations without needing to rewrite them - most work out of the box. You can think of this as simply swapping the V8 engine for Hermes. If combined with compiling Hermes to binary code, this feature could bring significant benefits to the entire Node.js ecosystem.

• 💸 Amazon Developer – Build Fire TV apps with React Native on Vega OS. Port your apps, expand your reach, and monetize. 
• 👀 React Native PR - CSS Grid is coming to React Native
• 👀 Keyboard Controller PR - New <KeyboardChatScrollView> component - Eliminates re-layouts during keyboard animations to improve performance
• 🐦 Tanner Linsley announced a PoC of TanStack Router running in React Native (GitHub code)
• 🐦 React Navigation 8 is experimenting with <Activity> for freezing and unmounting inactive screens
• 🐦 Jay Meistrich is testing Legend List v3 in production (Legend App), resulting in significant performance improvements
• 📜 Brownfield React Native app with multiple screens - Fixes a ReactFragment lifecycle race condition on Android and a static RN View Factory pattern on iOS - both needed to avoid crashes when pushing multiple RN screens.
• 📜 The experience of adding E2E testing to React Native with Maestro - A case study on the benefits of using Maestro over Detox: simpler, platform-agnostic configuration, fewer technical quirks, and a lower barrier to entry.
• 📜 React Native Comes to Meta Quest - Meta officially announced support for Horizon OS, allowing developers to build VR applications using their existing Android tools and knowledge.
• 📜 Do you need an MCP to build your native app? - A simple Markdown file with basic instructions can work better and is more affordable than a complex MCP from Xcode.
• 📦 QuickPush 2.0 - MacOS menu bar app for testing Expo Push Notification - Paid tool, can be used for free by compiling it from sources.
• 📦 RN Vibe Code - an open-source IDE for vibe coding - Runs in the browser.
• 📦 Sentry React Native 8.1 - enableTombstone for native crash reporting on Android 12+, iOS view filtering for session replay
• 📦 Posthog React Native 4.36 - Manual session replay control - New startSessionRecording, stopSessionRecording, and isSessionReplayActive methods.
• 📦 Stripe React Native 0.59 - Connect Embedded Components (preview), Radar session support
• 📦 Datadog 3.1.0 - Feature Flags - Using an open standard for feature flag management.
• 📦 Bottom Tabs 7.14 - Support hiding the native tab bar
• 📦 Screens 4.24 - Last release with Legacy Architecture support, Split View enhancements, iOS 26 fixes - Next version will drop support for RN < 0.82 and only support the New Architecture.
• 📦 Async Storage 3.0 - Instance-based storage, promise-only API, renamed batch methods - Breaking major, consult migration guide to v3.
• 📦 Number Flow 0.2 - New library that provides Text component with build in rolling counter animation
• 📦 Markdown Renderer 4.0
• 📦 Quick Crypto 1.0.12 - Full NodeJS Crypto API compatibility
• 🤖 Expo Skills - Official collection
• 🎥 React Universe Meetup x Zalando - All the talks are online
• 🎥 Callstack - Using Apple Intelligence Seamlessly With @react-native-ai/apple
• 🎥 Callstack - MLC LLM + React Native: On-Device AI Without the Pain
• 🎙️ Rocket Ship 92 - React Native 0.84, Hermes V1 & A TanStack React Native Framework?

🔀 Other​

• 📜 Josh Comeau - Sprites on the Web
• 📜 border-shape: the future of the non-rectangular web
• 📜 Is Node.js Single-Threaded… or Not?
• 📜 Micro Frontends: When They Make Sense and When They Don’t
• 📜 Slashing Web Traffic by 90%: The Power of Dictionary Compression
• 📦 Oxfmt Beta - Prettier-compatible, 30x faster
• 🤖 Skills Night: 69,000+ ways agents are getting smarter
• 🎥 Theo - The Future of TypeScript

🤭 Fun​

See ya! 👋

Huge thanks ❤️ — we just hit #1 resource on the State of React 2025 survey. Wild.

This week leans heavily into TanStack and Next.js content, plus a few notable releases worth your time.

On mobile, Hermes is clearly ramping up, and ByteDance just lowered the barrier to building Lynx apps.

Let’s dive in.

As always, thanks for supporting us on your favorite platform:

• 🦋 Bluesky
• ✖️ X / Twitter
• 👔 LinkedIn
• 👽 Reddit

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⚛️ React​

State of React 2025 - Survey Results

The State of React 2025 survey results are out. It’s impossible to summarize it all here, but here's what I've taken away:

• useEffect remains the most disliked hook
• <Suspense> increased in both adoption and satisfaction
• React Server Components and Server Functions divide
• Although usage is still low, <Activity> reaches a 100% satisfaction score
• TanStack Query and Zustand remain the favorite libraries
• Your favorite resources are the official docs, this newsletter (❤️), Syntax.fm, Theo.

Read also the breakdown from Aurora Scharff, who wrote the survey conclusion.

• 💸 Make React apps fast where it actually matters. Learn how to diagnose real bottlenecks and fix slow, janky React apps using modern React 19 patterns.
• 🔐 High-Severity RCE Vulnerability Disclosed in next-mdx-remote - Member that MDX is code and it’s unsafe to evaluate untrusted MDX strings.
• 🗓 React Paris 2026 - 🇫🇷 Paris - 26 & 27 March. Last chance to join! Ticket sales close on March 4th - don't miss this premier React event. Get a 10% discount with code "TWIR".
• 📜 Vercel - We Ralph Wiggumed WebStreams to make them 10x faster - For Next.js and other React/SSR/RSC heavy workloads, the Node.js native implementation of WebStreams can be major a bottleneck. They implemented a much faster spec-compliant alternative, until upstream performance improvements land in Node.js. No doubt Next.js is going to benefit from all this soon.
• 📜 Building Next.js for an agentic future - The Next.js team realized they need to treats agents as first-class users, thinking from their perspective.
• 📜 Virtual Scrolling for Billions of Rows - 5 vertical scrolling techniques from the `hightable` React virtualization library.
• 📜 Radix UI vs Base UI - Detailed Guide
• 📜 Next.js Finally Has Competition (TanStack Start)
• 📜 The Journey to a Safer Frontend: Why Gusto Removed React.FC
• 💸 The Secret to Faster RAG Systems by ElevenLabs
• 📦 Tailwind 4.2 - Webpack plugin, new utilities and color palettes - The Webpack plugin has been contributed by Tim Neutkens and should lead to significant performance improvements for frameworks like Next.js (even for Turbopack).
• 📦 Base UI 1.2 - Drawer component, support lazy/async components in render, new useFilteredItems hook - The new Drawer component is in preview (docs) for now. Unlike Radix, it’s not based on Vaul (now unmaintained).
• 📦 TanStack Hotkeys alpha - This brand-new TanStack library is framework-agnostic, but initially comes with a first-class React integration. It provides a type-safe API, normalizes modifiers across platforms, supports multi-step keyboard sequences, and more.
• 📦 TanStack Start 1.161 - Import protection - Ensures your code runs in the right client/server environment.
• 📦 Preact 11.0 beta.1 - By the way, TanStack query now supports Preact.
• 📦 React Doctor - Scan your codebase, let coding agents diagnose/fix your React code
• 📦 json-render 0.7 - Generative UI framework - Add 30+ shadcn/ui components, and more
• 🎥 Austin Davis - TanStack Router - How to Become a Routing God in React
• 🎥 Josef Bender - TanStack Loaders vs Context: What I Got Wrong
• 🎥 Shruti Kapoor - Build a YouTube content dashboard with generative UI (Tambo)

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📱 React-Native​

WebAssembly Comes to Hermes

An exciting early preview of WebAssembly support in Hermes, unlocking new ways to integrate C, C++, Rust, and more into your React Native app. It’s even possible to precompile WASM to Hermes bytecode .hbc files.

Sparkling - Unlocks Lynx at TikTok Scale

ByteDance unveiled Lynx last year as an interesting framework-agnostic alternative to React Native. So far, the DX has been limited, and there has been no easy way to create a new Lynx app from scratch. Sparkling changes that, and offers the tooling that Lynx apps deserve. By the way, Lynx 3.6 is out, improving support for React, AI, and CSS.

See also:

• 📦 Lynx 3.6 - Lynx for AI, ReactLynx hooks, CSS for Design
• 🎥 Sparkling: A New Framework for Lynx - A 2h event with Callstack and the Lynx team.

• 💸 Product for Engineers - 10x job posts for 10x engineers
• 👀 Yoga PR - Add core Yoga support for CSS calc()
• 📜 Expo - The production playbook for OTA updates
• 📜 Agent Device: iOS & Android Automation for AI Agents
• 📜 A Practical Guide to React Native Monorepo With Yarn Workspaces
• 📦 @react-native-ai/json-ui alpha - Generative UI, tailor-made for small, local language models - Similar to json-render, but on-device.
• 📦 Sentry React Native 8.0 - Capture App Start errors and crashes
• 📦 Agent Device 0.4 - CLI to control iOS/Android devices - Supports testing on physical devices
• 📦 Enriched 0.4 - Rich text editor - Support animated gifs, pasting images, checkbox lists
• 📦 Enriched Markdown 0.2 - Layout controls, a11y, font scaling, strikethrough/underline - The next release will be even better, bringing full GitHub Flavored Markdown support (support for tables/autolinks already merged).
• 📦 Bottom Sheet Stack 1.8 - Stack manager for bottom sheets and modals - Now library-agnostic, including built-in adapters
• 📦 Voltra 1.2 - Widgets/Live Activities framework - New iOS layout engine, improved Expo support, new getActiveWidgets() API
• 🤖 React Native Testing Library Skill
• 🤖 React Native Community - Upgrade RN Skill
• 🎥 Beto - How to Add Rich Push Notifications in Expo (iOS Images)
• 🎥 Simon Grimm - How I’d Learn React Native Today (2026 Edition)
• 🎙️ React Universe on Air - From Teddy Bears to Voice Agents: Kraen Hansen on Voice AI, Local-First & App Security

🔀 Other​

• 👀 Interop 2026 - Web browsers unveiled their focus areas for the year. This includes new features (cross-document view transitions, scroll-driven animations, container style queries…), but also stabilizing carryovers from Interop 2025 (anchor positioning, navigation API…).
• 👀 Selectors Level 5 - W3C First Public Working Draft - Preview of new CSS selectors and pseudo-classes being worked.
• 📜 Fun with TypeScript Generics
• 📜 Fastest Frontend Tooling for Humans & AI
• 📦 Module Federation 2.0 - Micro-Frontend Architecture - Adds support for SSR among many other things. They also plan to add support for React Server Components later.
• 📦 Electrobun 1.0 - Build ultra fast, tiny, and cross-platform desktop apps with TypeScript - An alternative to Tauri based on Bun/Zig.
• 📦 Chrome 145 DevTools - The performance panel now includes Soft Navigation markers, improving the DX when troubleshooting client-side navigation (SPA/CSR apps).
• 📦 Biome 2.4 - Embedded Snippets, HTML Accessibility, and Better Framework Support
• 📦 pnpm 10.30 - Improves pnpm why, showing an easier-to-understand reverse dependency tree

🤭 Fun​

See ya! 👋

This week, we have a good variety of React content, with great community articles and various releases. Many generative UI solutions are emerging, and I’m curious to better understand how they differ from one another.

React Native 0.84 just dropped, and Gesture Handler 3 is in beta. Expo SDK 55 should also be out soon.

As always, thanks for supporting us on your favorite platform:

• 🦋 Bluesky
• ✖️ X / Twitter
• 👔 LinkedIn
• 👽 Reddit

💸 Sponsor​

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⚛️ React​

Building Bulletproof React Components

A great read from an experienced Vercel engineer, sharing various lessons to harden your React components. The goal is to make them survive real-world usage (SSR, hydration, multiple instances, concurrency, portals, etc.) rather than just working on the happy path.

• 💸 FormEngine Core – Lightweight React JSON Schema form builder library for MUI with true cross-app reuse. No deep React knowledge required
• 📜 A React trick to improve exit animations - Freezing the component’s content while it’s animating to avoid visual glitches.
• 📜 The Recent CVEs in React and Node.js Were Found by an AI - Interesting to see the process of security researchers to find the recent RSC DoS vulnerability, and how it can be automated.
• 📜 React Compiler and why class objects can work against memoization - Prefer plain data and pure helpers that the React compiler can observe as inputs.
• 📜 The logo soup problem (and how to solve it) - Brand logos come in various logo shapes, aspect ratios, padding, and weights. Creating a visually aesthetic logo grid is surprisingly complex, but we now have a React library to help normalize them.
• 📜 Next.js at Enterprise Level
• 📜 Authenticated Routes with TanStack Router
• 💸 Product for Engineers - How I actually get good advice
• 📦 Tambo 1.0 - Generative UI SDK for React - An interesting full-stack solution for generative UI with React, tackling problems such as UI state persistence, streaming, and more. Comes with a backend that you can deploy on their cloud or self-host.
• 📦 eslint-plugin-react-render-types - Brings Flow's Render Types to TypeScript via JSDoc - Render Types is a really cool feature of Flow that lets you express constraints on React composition patterns, loved by many engineers at Meta. TypeScript doesn’t support this capability natively, but this ESLint plugin enables it.
• 📦 React Compiler Marker - Universal IDE extension, shows which components are optimized by the Compiler - Recently switched to an LSP, unlocking support for additional IDEs: IntelliJ/WebStorm/Neovim.
• 📦 React2AWS - Write AWS infrastructure like you write React components - Generates production-ready Terraform from JSX components and Tailwind-inspired classNames 🤪, fun idea.
• 📦 Ink 6.7 CLI renderer - Add support for React concurrent rendering, synchronized updates
• 📦 shadcn/ui - All blocks now available for both Radix and Base UI
• 📦 Visual Agentic Dev - Immersive React dev environment that lives within the browser
• 📦 Streamdown 2.2 - Animated streaming, improves support for custom HTML elements, completes ReactMarkdown props
• 🎥 Wawa Sensei - 3 React Three Fiber Mistakes I'll Never Make Again
• 🎙️ This Week in React - Oops more CVEs. AI has React "skills", Astro exits and Tailwind struggles

💸 Sponsor​

React Performance, v2

Make React apps fast where it actually matters.

An advanced performance course from Steve Kinney, focused on diagnosing real bottlenecks and fixing slow, janky React apps using modern React 19 patterns.

• 🚀 Modern React: Suspense, transitions, deferred values, hydration, server actions
• 🔍 Debug Faster: Find unnecessary re-renders with React DevTools & the Profiler
• 🧠 Smart Optimization: Memoization, virtualization, code splitting, optimistic UI
• ⚡ Feel-Fast UX: Learn how React Fiber prioritizes work to keep apps responsive

⏱ 4+ hours • ⭐ 4.8 rating
🏫 From Frontend Masters

👉 Watch the course: https://frontendmasters.com/courses/react-performance-v2/

📱 React-Native​

React Native 0.84

A new version of React Native just dropped. The highlights:

• Hermes V1 is now enabled by default for automatic performance gains and reduced memory usage
• Precompiled binaries on iOS by default for faster builds, with an opt-out to build from source
• Legacy Architecture Components removed for both iOS and Android

Gesture Handler 3.0 beta - Hook-Based API, Deeper Reanimated Integration & More

This new major version has been overhauled internally. It drops support for the Legacy Architecture, unlocking new capabilities, such as attaching gestures to text fragments. No APIs were removed, but a new hooks-based API makes it compatible with the React Compiler. They also improved the integration with Reanimated and Animated.

• 💸 Radon by Software Mansion - Join 42k+ React Native developers using Radon for faster, more efficient React Native development.
• 👀 React Native PR - Support React Portal with Fabric - React Native portals have been all the rage lately. Teleport just launched 1.0 last week, and we now have an experimental PR that kicks off the discussion of bringing first-class portal support to React Native, at the shadow-tree level (cross-platform).
• 🐦 William Candillon sharing WebGPU + Skia demos - You can seamlessly interleave one into the other from both sides.
• 📅 App.js Conf is looking for speakers! Apply to share your insights and stories about building with React Native & Expo! - The CFP is open until 28th February, and you can also get a 10% discount on tickets with our code “TWIR”.
• 📜 Building Rozenite: The injection - Explains how Rozenite is able to add specialized panels to the React Native DevTools, by hijacking a request.
• 📜 Faster, cheaper, messier: lessons from our switch to self-hosted GitHub Actions - Feedback from The Guardian after migrating their iOS app build from GitHub cloud runners to a self-hosted Mac Mini.
• 📜 How to modernize mobile retail apps with Expo
• 📦 React Native Storybook Tools - RN Storybook maintainer created a new VSCode extension that lets you seamlessly navigate from/to your stories, and a Rozenite devtool plugin.
• 📦 JSON Render 0.5 - Support for React Native - The generative UI library from Vercel now comes with a React Native integration. See also this X video demo.
• 📦 React Native Video Feed - Starter for building TikTok-style video feeds, based on react-native-video v7 (still in beta).
• 📦 Expo Apple Target 4.0 - Add support for 20+ new targets
• 📦 React Native Material Palette - Android Palette API, extracts prominent colors from images
• 📦 React Native ExecuTorch 0.7 - Local speech synthesis - If you are excited about offline-first AI, check also their roadmap toward v1.
• 📦 Expo Paste Input - Paste images and GIFs directly from the system clipboard, flexible native wrapper around TextField
• 📦 True Sheet 3.9 - Side Sheets for iPad and Tablets
• 📦 Expo OpenClaw Chat - Minimal SDK for Expo apps to connect to OpenClaw gateway
• 📦 React Native IAP 14.7.9 - 14.7.9 - tvOS, macOS & watchOS Support
• 🤖 Callstack Agent Skills updated - New skills to upgrade React Native / Expo
• 🎥 Beto - Expo Router iOS 26 Tutorial: Native Tabs, Toolbars, Zoom Transitions (SDK 55)
• 🎥 Software Mansion - Radon, An IDE for React Native & Expo
• 🎥 Callstack - What Is the React Native AI SDK? A Complete Intro & Quickstart
• 🎙️ RNR 353 - Node-API Support for React Native with Kræn Hansen
• 🎙️ Rocket Ship 91 - Gesture Handler v3, AI Agents Everywhere, Animated Components & Tiny Harvest Momentum

🔀 Other​

• 👀 TypeScript 6.0 Iteration Plan - The last JS-based version (no 6.1 planned) is about to drop in beta (last minute edit: 6.0 beta is out). A bridge release that prepares us for the faster 7.0 Go rewrite. One notable change is to turn strict mode on by default.
• 👀 Webpack - Roadmap 2026 - The historical bundler plans to ship several new features, such as native CSS module, TS loader, multi-threading support, a universal runtime target, a unified minimizer API, and more. They also published v5.105 recently, with support for tsconfig.json alias resolution.
• 📖 Vitest 4.1 beta - Test tags - This upcoming feature lets you categorize tests under tags that you can configure independently. For example, you could tag a test as flaky to assign it a specific retry/timeout policy.
• 📜 The Wrong Work, Done Beautifully - The author of jsdom reflects on the usefulness of his popular library compared to headless browsers. However, Claude Code restored his enthusiasm for maintaining the project. By the way, v28.0 is out.
• 📜 How Rolldown Works: High-Performance Code Splitting with Bitset Logic
• 📦 Almostnode - Node.js in your browser - This lightweight and open alternative to WebContainers can run Next.js and Vite apps.
• 📦 Chrome 145 - Map.prototype.getOrInsert(), CSS text-justify, letter-spacing - They also announced an early preview of WebMCP in Chrome 146, letting you expose tools for AI agents to interact with your websites/apps.
• 📦 ESLint 10.0 - Improves JSX references tracking, removes eslintrc configuration, smaller
• 📦 Bun 1.3.9 - bun run –parallel / –sequential
• 📦 VSCode 1.109 - Improved Agent UX and extensibility

🤭 Fun​

See ya! 👋

You’ll have to get used to it: yet another week filled with AI content. From MCPs to Agent Skills to AI-specific CLIs, we don’t know where to turn anymore.

We’re delighted to be ranked once again among the top 5 newsletters in the State of JavaScript 2025 survey. Thanks for your trust!

By the way, we’d love your feedback — what do you like about the newsletter, and how could we make it better in 2026?

Just hit reply and let us know! ❤️

As always, thanks for supporting us on your favorite platform:

• 🦋 Bluesky
• ✖️ X / Twitter
• 👔 LinkedIn
• 👽 Reddit

💸 Sponsor​

React Performance, v2

Make React apps fast where it actually matters.

An advanced performance course from Steve Kinney, focused on diagnosing real bottlenecks and fixing slow, janky React apps using modern React 19 patterns.

• 🚀 Modern React: Suspense, transitions, deferred values, hydration, server actions
• 🔍 Debug Faster: Find unnecessary re-renders with React DevTools & the Profiler
• 🧠 Smart Optimization: Memoization, virtualization, code splitting, optimistic UI
• ⚡ Feel-Fast UX: Learn how React Fiber prioritizes work to keep apps responsive

⏱ 4+ hours • ⭐ 4.8 rating

🏫 From Frontend Masters
👉 Watch the course: https://frontendmasters.com/courses/react-performance-v2/

⚛️ React​

• 💸 PostHog - 8 learnings from 1 year of agents
• 👀 React DOM PR - Support for SubmitEvent.submitter
• 👀 React.dev PRs - Revamp docs of useOptimistic, useActionState, and useEffectEvent.
• 📜 React’s ViewTransition Element - Chris Coyier compares the pros and cons of using <ViewTransition> VS the native platform API document.startViewTransition() in a React app.
• 📜 Why Inngest migrated off Next.js to TanStack Start - Reducing local dev time by 83% - Ingress was an early adopter of RSCs but got bitten by them, experienced slow local DX despite using Turbopack. They share their migration strategy and lessons learned.
• 📜 Reverse-Engineering Figma Make: Extracting React Apps from Binary Files - Figma Make uses React, Radix UI, and Tailwind under the hood, and you can recreate the underlying React app from .fig files.
• 📜 The engineering behind GitHub Copilot CLI’s animated ASCII banner - Rendering reliable animated components to the terminal UI looks complex, even if you leverage the React Ink renderer.
• 📜 Can AI actually debug complex React/Next.js issues? - Throwing 3 real-world bugs at Claude Opus, it could only fix one properly.
• 📜 React design system library MCP - How to leverage the experimental Storybook MCP server
• 💸 Building AI Voice Agents at Scale — The executive playbook by ElevenLabs
• 📦 Next Intl 4.8 - Ahead-of-time compilation - This can significantly reduce your bundle size. Instead of bundling a full ICU parser to the client, it’s now possible to precompile ICU messages to a minified AST interpreted by a lightweight runtime.
• 📦 Bun 1.3.8 - Bun.markdown API - Comes with a first-class Bun.markdown.react() API and claims to be much faster than React alternatives.
• 📦 React Grab 1.0 - Select context for coding agents directly from the website - A convenient tool can make your coding agent 3x faster thanks to more precise prompts.
• 📦 shadcn/ui updates - RTL support, unified Radix UI Package
• 📦 React Aria 1.15 - New render prop, Agent Skills, constrain dates on blur
• 📦 Gatsby 5.16 - Add support for React 19 and Node 24
• 📦 Rspress 2.0 - Documentation framework - Theme styling, AI-native, Shiki highlighting, performance, new plugins
• 📦 React Three Fiber 10.0 alpha - Backward compatible, WebGPU support, TSL hooks, new scheduler
• 📦 Travels 1.0 - Fast, framework-agnostic undo/redo library with React integrations
• 📦 Prefill - Partial application for React components
• 📦 Meteor 3.4 - Rspack integration, 4x faster builds, 8x smaller bundles, and extended bundler features
• 📦 ESLint React 2.9 - Extract React RSC sub-plugin, new RSC preset
• 📦 Rsbuild Plugin React Router 0.1 - Behavior closer to React Router's official Vite plugin
• 🤖 React Router Agent Skills
• 🤖 React Composition Patterns Agent Skills
• 🎥 Toby Mey - Where to put Auth in Next.js 16?
• 🎥 Remotion - Create motion graphics with AI – Simple tutorial for beginners

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📱 React-Native​

Behind the Scenes of React Native Multithreading: Vision Camera V5 x React Native Worklets

Worklets have been extracted from Reanimated to become a first-class multithreading primitive. It has been integrated into the upcoming VisionCamera V5, enabling its real-time frame processor system to run directly on the Camera Thread.

Also, take a look at 📦 Worklets 0.8 - Bundle Mode preview. It makes it possible to use third-party libraries and do network requests within worklets. This mode is opt-in but might become the default in the future.

• 💸 Stop searching for components manually - try the Element Inspector in Radon to build React Native apps faster.
• 📜 Building Voltra: Renderer - The creator of the Widgets and Live Activities library explains how it works under the hood. It’s a custom renderer, but using react-reconciler wasn’t a great fit, so they took inspiration from React DOM SSR code instead.
• 📜 5 tips to increase mobile app downloads and retention in 2026
• 📦 Teleport 1.0 - Brings true native portals to React Native - The equivalent of ReactDOM.createPortal for mobile, with additional view re-parenting, re-use, and pre-rendering capabilities. It’s cross-platform and also supports web.
• 📦 Screens 4.21 - Android stack screen preloading, iOS xcassets icon catalogs support for key navigation UI elements - Note that iOS xcassets icon catalogs are already integrated into React Navigation for native tabs.
• 📦 Xcode 26.3 RC - Unlocks the power of agentic coding - If you don’t want to use Xcode as an IDE, you can still leverage the new Xcode MCP and its RenderPreview tool to feed your AI with visual feedback (SwiftUI previews, it probably doesn’t work with RN views).
• 📦 Agent-Device - CLI to control iOS and Android devices for AI agents - The equivalent of Vercel’s agent-browser for mobile. Support for TV/desktop apps planned.
• 📦 AI SDK Profiler - New Rozenite DevTools plugin - Lets you inspect OpenTelemetry spans coming from the RN AI SDK
• 📦 AI SDK 0.12 - Profiler plugin, ai v6, tool calling and re-ranking for Llama models
• 📦 Tamagui 2.0 RC - Universal style library for React - More stable, easy, documented, fast, and feature-complete
• 📦 Uniwind 1.3 - Support data attributes
• 📦 Superconfig - 18x faster than react-native-config, using Nitro
• 🎥 Callstack - Implementing an Android TurboModule from Scratch
• 🎥 React Native Live - New monthly live show channel from Infinite Red
• 🎥 Beto - Are You Leaking Your Environment Variables? React Native + Expo
• 🎥 Simon Grimm - 10 Tips You Need For Expo Router in 2026!
• 🎙️ RNR 352 - Expo Launch with Cedric van Putten

🔀 Other​

• 📊 State of JavaScript 2025 - Survey Results - React and Next.js keep growing in usage, but satisfaction is decreasing. Meanwhile, alternatives such as Astro and Solid have pretty high satisfaction scores.
• 📜 Implementing the Temporal proposal in JavaScriptCore - The JS Temporal API should be in all browsers relatively soon, with Safari being the last remaining browser. The implementation for JSC (Safari, Bun) is complete but not merged yet.
• 📜 Node.js Path Traversal: Prevention & Security Guide - Explains how to secure your Node app from unsafe path inputs, such as http://localhost:port/images/../../etc/passwd.
• 📜 Building a browser API in one shot - With a good prompt created by an expert, Claude Opus can one-shot a decent TypeScript implementation of IndexedDB.
• 📦 Astro 5.17 - Dev toolbar placement, partitioned cookie, async file loader parser
• 📦 Turborepo 2.8 - Git worktree support, Agent skills, AI-enabled
• 📦 Babel 7.29 - The last Babel 7 minor release - They are also announcing Babel 8 in RC, aiming to be easy to adopt, and ESM-only.
• 🔗 npmx - A fast, modern browser for the npm registry

🤭 Fun​

See ya! 👋