Big releases anchor the week. React Email 6.0 consolidates a fragmented ecosystem into one package, unlocking an embeddable editor and more reliable HTML rendering across mailboxes.

On mobile, Marc Rousavy shipped VisionCamera v5 with a full Nitro Modules rewrite, Worklets integration, pro controls, and a modular plugin architecture.
Heads up on the Vercel April 2026 incident: rotate your integration tokens if you use third-party integrations.

Also inside: Expo’s Series B, Seth Webster joining Expo, the Doctolib WebView-to-Native migration, and fresh releases from TanStack, React Hook Form, ExecuTorch, TS Go beta, Rspack RSC, and more.

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​

React Email 6.0

React email matures with a major release that cleans up a fragmented ecosystem. It makes version management much easier and stops the CLI and components from getting out of sync.

Key technical shifts:

• Embeddable Editor: You can use the preview tool as a React component to show users how their emails will look directly in your own app.
• Reliable HTML: The engine that turns React into email HTML handles more different mailboxes quirks.
• Faster HMR: Faster switching between templates and preview, even with complex layouts

Moving away from modularization into one big package is a big step toward making the library stable and more capable. While it might slightly increase bundle size, it enables complex features blocked before, like the embeddable preview and advanced layout transformations.

• 💸 Sentry - Stop flying blind in Next.js. This free workshop covers logs, tracing, and how to connect both in production. Register today.
• 🔐 Vercel April 2026 security incident - A few environment variables were accidentally exposed because of a security breach linked to a third-party AI tool. Since some secrets are stored in plain text, it is recommended to rotate them manually as soon as possible.
• 🗓️ React Norway - 🇳🇴 Oslo - 5 June. Check out the stellar lineup featuring Dominik Dorfmeister, Aurora Scharff, and Jack Herrington at the legendary Rockefeller music venue. -10% with code "TWIR".
• 📜 Building a Blog in TanStack - Building a markdown blog with TanStack Start, then going fully static via pre-rendering and static server functions to avoid Shiki's cold-start cost.
• 📜 Build with React, Run on Salesforce: Introducing Salesforce Multi-Framework - A story about the benefits of React that convinced Salesforce to drop their custom solution in favor of React development on their platform. Currently in Beta.
• 📜 AI-Generated UI Is Inaccessible by Default - Common accessibility pitfalls in AI-generated code and ways to ensure correct standards through linting, testing and CI.
• 💸 PlanetScale - Faster apps start with a faster database. Get started with the fastest benchmarked Postgres and MySQL.
• 📦 TSRX - A TypeScript language extension for building declarative UIs - A spiritual successor to JSX. A new framework-agnostic solution created by former React core team member Dominic Gannaway, can compile to React/Solid/Ripple.
• 📦 Rspack 2.0 - The Rust bundler keeps improving on performance and features while remaining compatible with webpack. This new major also includes experimental React Server Components support, with plans to add support for TanStack RSC.
• 📦 TanStack Store 0.11 - New useAtom, useSelector, and createStoreContext hooks - useStore is now deprecated in favor of useSelector.
• 📦 ESlint Plugin React Hooks 7.1 - Support for ESLint v10, performance and linting improvements
• 📦 Lingui 6.0 - i18n for React, RN, and more - Technical improvements and modernization
• 📦 React Hook Form 7.73 - Memoized submit, faster deepEqual, enhanced type-safety for deeply nested fields
• 🎥 Ankita Kulkani - Next.js finally has Page Transitions Now

💸 Sponsor​

Build Gantt Charts in React – No JS Fluff

Take control of your workflow with SVAR React Gantt, a native React component for task scheduling. Add custom Gantt diagrams to your apps – from simple timelines to complex projects with thousands of tasks.

• Pure React architecture for full customization
• Drag-and-drop timeline and easy task editing
• Optimized rendering for large datasets
• Easy integration with Next.js and state libraries

MIT-licensed core. PRO Edition for critical path, baselines, export, and auto-scheduling.

🛠️  Learn more & get started

📱 React-Native​

Vision Camera v5

Marc Rousavy has released a massive update for VisionCamera. This major upgrade to the camera module includes many new features and improvements. Let’s take a closer look at the main highlights:

• Nitro Modules Backend - The complete rewrite using Nitro Modules results in significant performance improvements.
• Worklets Integration: Now uses react-native-worklets for smoother frame processing.
• Pro Camera Controls - Full manual support for Exposure, Focus, and White Balance, plus RAW format support.
• Depth & Multi-Cam - You can now stream LiDAR/ToF data and record with front and back cameras simultaneously.

This release comes with a new modular architecture - VisionCamera is no longer one giant package. You can now pick and choose only the plugins you need to keep your bundle size small:

• react-native-vision-camera-skia - Real-time filters and overlays
• react-native-vision-camera-barcode-scanner - MLKit integration out of the box
• react-native-vision-camera-resizer - GPU-accelerated resizing for ML tasks
• react-native-vision-camera-location - Automatic EXIF tagging

• 💸 PostHog - A beginner's guide to testing AI agents
• 📣 Expo raised $45 million in a Series B funding round. They also hired Seth Webster, who previously led the React team and kickstarted the React Foundation. They are betting on an agentic future, at a moment where the React Native ecosystem is expanding faster than ever.
• 🐦 The Reanimated team is working on pseudo-selector support for CSS animations
• 🐦 The Hermes team is working on JSI support for TypedArrays
• 🐦 Evan Bacon demod an iOS simulator running inside of Codex desktop
• 🐦 The Codex Expo plugin is now available
• 📜 How Margelo Helped Discord Improve React Native's New Architecture Performance -
  A deep dive into concrete low-level optimizations that made the Discord app. Some of these were upstreamed into Reanimated feature flags and the new Shared Animation Backend in React Native core.
• 📜 How to Build Your React Native App Locally (APK and .app) - A technical walkthrough for generating local iOS and Android artifacts (.app/.apk) directly from an Expo project using xcodebuild and gradlew.
• 📜 Rebuilding the Doctolib Homepage from Webview to Native - Architectural migration from a WebView using a Backend for Frontend architecture. Time to Interactive dropped ~50% on both iOS and Android after the migration.
• 📜 On-device AI vs Cloud TTS – Kokoro, react-native-executorch - How on-device AI can reduce the cost of TTS without sacrificing quality.
• 📜 Deferred Deep Linking for Mobile Developers with Detour - An explanation of when deep linking is a relevant use case for your app and how Detour implements that concept.
• 📦 Nano Icons - Use any SVG as font. High-performance, build-time icon font generation for React Native & Expo
• 📦 Argent - An agentic toolkit to control, debug, and profile iOS apps from Software Mansion
• 📦 React Native ExecuTorch 0.8 - Vision Camera v5 integration, Vision Language Models support, Whisper model up to 3x faster
• 📦 Maplibre 11.0 - Dropped legacy React architecture support; aligned API with MapLibre GL
• 📦 Graph 1.2 - Support for latest RN, Reanimated & Skia
• 📦 Test Renderer 1.0 - Successor to the deprecated react-test-renderer - Each minor version tracks React 19 line. 1.0.x for React 19.0, 1.1.x for 19.1 (Owner Stacks, CSS-safe useId), 1.2.x for 19.2 (<Activity>, useEffectEvent).
• 📦 RNSec 1.3 - New security rules and native code vulnerability scanner
• 📦 Expo Pretext 1.1 - Brings CSS text-wrap: balance/pretty to RN
• 📦 Audio API 0.12 - Mac Catalyst support, Android ducking, universal resampler, rotating file writer for long recordings
• 🎥 Beto - Expo Router v55 Crash Course
• 🎙️ RNR 360 - TanStack Native Router with Tanner Linsley

🔀 Other​

• 📜 Building a UI Without Breakpoints
• 📜 Shopify Speed Optimization: Fixing The Real Bottlenecks
• 📜 Most Apps Are Slower Than They Need to Be
• 📦 TypeScript 7.0 Beta - The first beta of the Go rewrite is out! It has great compatibility with 6.0 and should be ~10x faster thanks to parallelization.
• 📦 Node.js 24.15 - require(esm) marked as stable
• 📦 Bun 1.3.13 - Fast parallel and isolated tests, faster bun install
• 📦 Fast-Check 4.7 - Property-based testing framework
• 📦 Hono Node.js Adapter 2.0 - Up to 2.3x faster

🤭 Fun​

See ya! 👋

This week we finally have an experimental version of TanStack RSC! A new React DoS vulnerability affects Server Functions, so you probably need to upgrade React again. There are also important releases from the MUI team, and Styled Components is still alive!

On the React Native side, we got a new universal Haptics library, and a much faster fetch alternative. We heard VisionCamera 5 is around the corner.

Let's dive in!

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

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

💸 Sponsor​

The fastest Postgres + MySQL database

PlanetScale Metal runs on blazing-fast NVMe in your favorite hyperscaler clouds. Get high-performance, reliability, and the best DX available for Postgres and MySQL.

Companies like Cash App, Cursor, and MyFitnessPal trust PlanetScale for their Tier 0 databases.

With PlanetScale, you get:

• The best performance with local NVMe
• AI integration with our MCP, skills, and automatic schema recommendations
• Built-in query observability with Insights
• Pricing from $5/mo

Migrate your database today

⚛️ React​

TanStack - React Server Components Your Way

Two weeks ago, we covered the TanStack Start RSC sneak peek that Tanner offered us at React Paris. And now, they are available as an experimental feature!

My highlights remain mostly the same:

• Primitives: RSCs are supported through 3 primitive APIs that permit to manipulate RSCs as any other stream of data, immediately compatible with existing tools such as React Query, TanStack Router loaders, localStorage, CDNs and HTTP caches. It is entirely opt-in and does not impose a server-first approach nor any framework convention, giving you total freedom on how to compose those primitives.
• Composite Components: The server renders a RSC with slots that get filled by the client. You don’t need ’use client’ directives, although they are supported. This new concept creates an explicit boundary between the server and the client. It should be possible to co-locate client/server components in the same file this way.
• No Server Actions: A design decision for security reasons. Recent React CVEs affecting other RSC frameworks were due to Server Functions handling Flight payloads and don't apply to TanStack Start, as Jack Herrington explains in this video.

What strikes me is just how different this is from Next.js. It feels more like a library than a framework, and more in sync with the philosophy that initially attracted me to React.

• 💸 PostHog - How we built automatic clustering for LLM traces
• 🔐 React2DoS (CVE-2026-23869): When the Flight Protocol Crashes at Takeoff - A new Denial-of-Service vulnerability affects the React Flight Protocol when deserializing Server Functions payloads. If you use Server Functions, upgrade asap to React 19.2.5 or Next.js 16.2.3
• 👀 Next.js PR - Node.js streams: Fork points - The SSR/RSC throughput is limited due to the use of standard Web Streams. The PR shows ongoing work to provide support for faster but non-standard Node.js streams, though the experimental.useNodeStreams feature flag. Accordingly to this former Vercel article about Web Streams, the outcome could be quite significant.
• 🗓️ dotJS 2026 - 🇫🇷 Paris - 18 September - Call For Papers for dotJS is open until April 28th 6 PM CET, submit now your talk proposals for the conference!
• 📜 GitHub - The uphill climb of making diff lines performant - GitHub cut the rendering cost their React-based PR diff view. What worked includes using fewer DOM nodes and event handler, simpler CSS selectors, TanStack Virtual for large PRs, removing scattered useEffect, and more.
• 📜 If You Can't See the Boundary, You Can't Reason About the System - Explains the need to visually see the boundary of Client/Server components on the current page, and introduces a Next.js App Router tool to highlight those boundaries.
• 📜 Contributing Callsite Revalidation Opt-out to React Router - Explains how React Router and React Query behave differently regarding revalidation after a mutation, and motivations to contribute a new unstable_defaultShouldRevalidate API to React Router.
• 📜 The Vertical Codebase - Colocate files by vertical features to scale your React codebase.
• 📜 Logging in Next.js with LogLayer: Instrumentation, Console Override, and Structured Logs - Gives you one logging model across all runtimes.
• 📜 Now more then ever, you need to master custom ESLint rules - Deep dive into writing custom ESLint rules, with concrete React-focused examples, such as preventing useEffect antipatterns).
• 📜 Next.js use cache: remote: A Distributed Cache in One Line - By default, the Cache Components feature works in memory, but it’s possible to cache data across serverless instances to increase cache hits.
• 💸 Certificates.dev - Boost your skills with up to 6 live bootcamps led by Aurora Scharff and get React certified with our Mid & Senior bundles
• 📦 Material UI and MUI X 9.0 - This large release re-aligns the versions of the core design system and the advanced components. MUI moves from v7 straight to v9, and introduces the first Base UI-backed primitives in the codebase with new NumberField and Menubar components. MUI X also received several improvements, adding new Chat and Scheduler components in alpha.
• 📦 Base UI 1.4 - One-Time Password field (preview), update a Toast, many bug fixes
• 📦 Unhead 3.0 - Streaming <head> component for any framework
• 📦 Storm - Terminal UI framework based on React - This new TUI addresses limitations of Ink, with cell-level diffing and dual-speed rendering architecture.
• 📦 Styled Components 6.4 - React Server Components support, performance optimizations, RN improvements, and more - The historical CSS-in-JS lib is in “maintenance mode” and yet it received a quite significant update!
• 📦 React Aria 1.17 - Expandable rows in Table, window scrolling in Virtualizer, dependency consolidation, sub-path imports
• 📦 Isolet - Package any component into a self-contained, isolated widget
• 📦 Remocn - Production-ready animations, transitions, and scenes for Remotion
• 🎙️ Syntax.fm 955 - Next.js Vendor Lock-in No More

💸 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-Native​

Pulsar - Haptic Feedback Library

Meet Pulsar, a new library from Software Mansion that makes implementing haptic feedback much easier. Comes with SDKs for React Native, native iOS, and Android. See also the intro video.

• 150+ patterns to browse, filter, preview, and ship
• Live Preview Playground app for testing on a physical device
• Multiplatform SDKs
• Audio preview for testing in a simulator
• Pulsar Studio – coming later – will allow the design of custom haptic sequences

• 💸 Sentry - A tutorial to debugging undefined properties in React Native by correlating frontend and backend logs
• 👀 SWC PR - Complete Hermes Flow stripping parity - Currently, Babel is needed to strip non-TS code in React Native. The newly released Flow support in SWC could help you adopt an alternative toolchain, leading to build time improvements or faster unit tests.
• 💬 React Native Proposal - Allow opting in to specific feature flags via public APIs - Community proposal to expose experimental feature flags for testing before broad rollout.
• 📜 How to keep your OTA updates lean and fast - Why smaller updates matter, how to ship them effectively, and how to monitor your usage.
• 📜 React Native 0.85 changelog dive - Analysis of 0.85's Shadow Tree commit branching, Animation Backend changes, and breaking changes for library authors.
• 📜 Zero re-renders on theme change: Introducing Uniwind Pro - A look into first stable release, the C++ Shadow Tree Engine, className Animations with Reanimated, Animated Theme Transitions, pricing, and more.
• 📜 The Complete Guide to React Native Build Optimization - How to improve build times with Gradle/Metro parallelization and C++ compiler caching.
• 📦 RN 0.85.1 - Animation backend as experimental - Enables the new Shared Animation Backend in the experimental Release Level.
• 📦 Nitro Fetch 1.0 - Fast networking library, drop-in replacement for fetch - This Margelo library supports HTTP/3, Prefetching, Steaming, FormData, WebSockets, worklets, and more. Demo on 🐦 X shows the impressive performance impact on the Bluesky app.
• 📦 Agent React DevTools - Give AI Agents Access to React Internals - New CLI from Callstack that exposes React component tree and profiling data to AI agents, enabling deeper debugging beyond UI trees.
• 📦 Expo Pretext - Text layout primitive React Native - Add Pretext support to React Native, unlocking new layouts currently difficult to achieve with CSS or Skia.
• 📦 Nitro Vector - C++ vector path engine powered by Nitro Modules - 104x faster bezier math, boolean ops, path analysis, and SVG parsing — all in C++ off the JS thread.
• 📦 Metro MCP - MCP server for React Native debugging & automation - Plugin-based MCP server connecting to Metro via CDP — exposes console logs, network, Redux, components, test recording, and more. Works alongside Chrome DevTools.
• 📦 Galeria 3.0 - New Architecture only, iOS 16+
• 📦 CRNL 0.62 - RN 0.85, Expo SDK 55 support
• 📦 Metro 0.84.3 - TLS support, Fast Refresh heartbeat, optimized cache
• 📦 Harness 1.1 - CI improvements, unified GitHub Action, plugin system
• 📦 Rozenite 1.7 - Metro-backed agent workflow, SQLite plugin, Webpack web support
• 📦 React Native Ease 0.7 - Animated borderColor, shadow properties
• 📦 Voltra 1.4 - Android theme-aware widget colors, Android ongoing (persistent) notifications
• 🎥 Beto - 5 React Native Styles Your AI Is Getting Wrong - Linear Gradient (experimental), filter, boxShadow, gap, mixBlendMode, are available in RN, no need for external libraries.
• 🎥 Callstack - AI-Assisted Migrations to React Native: From Months to Days - Reducing migration using AI in real React Native workflows. Practical strategies for modernizing existing apps without starting from scratch.
• 🎙️ RNR 359 - The AI Apocalypse? The past, present, and future of software

🔀 Other​

• 👀 GitHub Stacked PRs in private preview - A much-anticipated feature lets you break large changes into small, focused PRs that build on each other.
• 📜 You can't cancel a JavaScript promise (except sometimes you can) - Using never-resolving promises to interrupt async functions.
• 📜 What We Learned Building a Rust Runtime for TypeScript - How Encore built a Rust runtime embedded in Node.js via napi-rs, moving infrastructure concerns (HTTP, DB, pub/sub) out of the JS event loop. Benchmarks show 9x Express throughput with 80% less latency.
• 📦 Chrome 148 Beta - Name-only container queries in CSS, Prompt API, Web Serial API on Android, and more - Notably includes an origin trial for the HTML-in-Canvas API that led to many impressive demos.
• 📦 Yuku - High-performance JS/TS toolchain in Zig - Already full spec compliance, competitive with Oxc on raw parsing speed.
• 📦 Webpack 5.106 - Plugin validation hooks, CSS runtime injection, smarter tree shaking, experimental Oxc parser
• 📦 Bun 1.3.12 - WebView headless browser, Markdown in terminal, in-process Cron scheduler
• 📦 Syncpack 14.0 - CLI for managing npm dependency versions, rewritten in Rust
• 📦 Phantom UI - Structure-aware skeleton loader for every framework, based on Web Component

🤭 Fun​

See ya! 👋

This week brings a collection of smaller, yet still noteworthy, React releases and articles.

On the React Native side, v0.85 just dropped with a new Shared Animation backend. Speaking of animations, we have a little sneak peek of exciting things coming, such as <ViewTransition> and Skia Graphite.

With the recent surge in npm supply chain attacks, it’s worth reviewing the npm Security Best Practices guide to secure your setup.

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​

Boneyard - Auto-generated skeleton screens

Instead of manually creating skeleton screens for loading states, this innovative library snapshots your real UI at various breakpoints and captures skeleton "bones" - positioned, sized rectangles that mirror the layout exactly. It supports React, React Native, and other frameworks.

• 💸 Platano - Ship a revenue-ready AI image app this weekend. You know React? That's all you need to launch on the App Store.
• 🗓 React Summit - 🇳🇱 Amsterdam - 12 & 16 Jun. Catch the latest in React with inspiring talks, networking, and Amsterdam adventures. Save on tickets with promo code TWIR (-10%) !
• 📜 The Precompute Pattern: Encoding Dynamic Data into URLs in Next.js - An advanced technique to maximize the ability for Next.js to pre-render pages. It works particularly well for low cardinality variants such as feature flags and auth status.
• 📜 Under the hood of MDN's new frontend - MDN launched a new frontend, replacing their old and difficult-to-maintain React CRA app for a new stack. They implemented their own Server Components system on top of Lit and Custom Elements, using Declarative Shadow DOM as a progressive enhancement.
• 📜 Moving Railway's Frontend Off Next.js - Feedback on migrating a Page Router app with 200+ routes to TanStack Start in 2 PRs with zero downtime. Their app now builds faster, has a more explicit model, and layout composition is easier.
• 📜 You really, really, really don't need an effect! I swear! - And even when you need one (data fetching), someone already wrote that effect better than you will (React Query).
• 📜 How to implement spring physics buttons with Framer Motion
• 💸 Certificates.dev - Go beyond tutorials. Get certified with real-world React coding exams prepped by Aurora Scharff. Trusted by 680 companies
• 📦 Ink 7.0 - React renderer for CLIs - Unsurprisingly, this package has become quite popular with the rise of AI and terminal apps. This major version upgrades to Node 22, React 19.2, and adds many new hooks, features, and props.
• 📦 Comark - Fast, streaming-ready Markdown parser with support for React and more - An interesting alternative to Streamdown or MDX, coming from the Nuxt team.
• 📦 Docusaurus 3.10 - Security, Docusaurus Faster stable, VCS API, Strict MDX, Site Storage stable - A milestone release to prepare for Docusaurus v4.
• 📦 Shaders beta - The component library for creative WebGPU effects in the browser - A nice solution for modern creative web dev, coming with first-class React components. Commercial usage of React components is free, although there’s a paid offering.
• 📦 React Hook Form 7.72 - Built-in form-level validation - Useful feature for cross-field validation.
• 📦 Conform 1.18 - Progressively enhance HTML forms with React
• 📦 React Router 7.14 - Support for Vite 8, unstable RSC Framework Mode improvements
• 📦 shadcn CLI 4.2 - New shadcn apply command to switch presets easily
• 📦 Material UI 9.0 - Accessibility improvements, sx prop performance, and cleanup of deprecated APIs
• 📦 Mantine 9.0 - New components: Scheduling, FloatingWindow, OverflowList, Marquee, and more
• 📦 Next-Intl 4.9 - Support <Link transitionTypes>
• 🎥 Web Dev Simplified - You Need To Start Using This Underrated React Hook - useSyncExternalStore
• 🎥 React Paris 2026 - YouTube Playlist

💸 Sponsor​

No breakpoints, no console.log — just AI & time travel

15x faster TypeScript and JavaScript debugging than with breakpoints and console.log, while upgrading your AI agent into an expert debugger with real-time context.

Wallaby.js runs your tests as you type, feeding your AI assistant live runtime values, code coverage, error details, and execution paths — all right next to your code. With Wallaby v3’s new engine 🚀, tests start instantly with cached results, prioritize active files, and stream updates in real time.

Built for testing, Wallaby includes a Time Travel Debugger, the ability to run only opened files, full-context AI integration, smart test runs, and more.

➡️ Learn More

📱 React-Native​

React Native 0.85

React Native 0.85 notably ships with a new Shared Animation Backend built in collaboration with Software Mansion, alongside a few other improvements and breaking changes:

• Shared Animation Backend: This new internal engine will soon be enabled in React Native 0.85.1 and power both Animated and Reanimated. It enables performance benefits for Reanimated, and the core Animated API will finally animate layout props through the native driver!
• DevTools Improvements: Multiple simultaneous CDP connections allow you to debug with DevTools, VS Code, and AI agents simultaneously without sessions dropping.
• Metro TLS Support: HTTPS and WSS during development for testing secure APIs.
• Breaking Changes: Jest preset moved to @react-native/jest-preset, dropped EOL Node versions, and removed StyleSheet.absoluteFillObject.

• 💸 Product for Engineers - What we wish we knew about building AI agents
• 👀 React PR - ViewTransition support for React Native Fabric - Behind a flag, not ready for prime time, but this is one of many PRs showing that <ViewTransition> for React Native is being actively worked on!
• 👀 React Native Skia - First Graphite pre-release- Google's next-gen Skia renderer (Vulkan/Metal/Dawn) comes to RN Skia, now available in the @next distribution channel.
• 📜 Expo brownfield: How to add Expo to your existing native app without a rewrite - SDK 55 introduced a new “isolated” approach to integrate Expo in an existing native app. The Expo app is built ahead of time and distributed as a native binary artifact
• 📜 React Native JSI Deep Dive Series - Comprehensive 12-part series covering JSI internals, from C++ architecture to TurboModule integration.
• 📜 How We Optimized Agent Device for Mobile App Automation - Deep dive on reducing LLM token usage by 50% for AI-driven mobile testing through accessibility snapshots and smarter context management.
• 📦 RN Windows 0.82 - Fabric-only, XAML UI Hosting - Community modules can now embed native XAML controls directly in Fabric. New accessibility override API gives third-party modules fine-grained control over screen reader behavior.
• 📦 Create React Native Library 0.60 - Experimental C++ TurboModule, Vite web support for examples - New templates can now scaffold experimental C++ TurboModules for native development. You can now test both native and web support without custom configuration.
• 📦 Maestro CLI 2.4 - iOS 26 support, new list-device commands for easier device selection
• 📦 True Sheet 3.10 - iOS 26 scroll edge effects, grabber accessibility
• 📦 Nitro Player 1.0 - Audio player with playlist management, playback controls, and support for Android Auto and CarPlay
• 📦 Skia 2.6 - New immutable Path API
• 📦 Gesture Handler 2.31 - Various bug fixes, fix unresponsive handlers

🔀 Other​

• 👀 JSIR - A High-Level IR for JavaScript (RFC) - Google's new JavaScript IR (Intermediate Representation) proposal for static analysis. Already used internally for code analysis and deobfuscation, notably decompiling Hermes bytecode.
• 📜 The Hidden Blast Radius of the Axios Compromise - Last week, the popular axios library got compromised through a sophisticated social engineering attack. Even if your app doesn’t depend on the library, you may still be affected through transitive dependencies or using npx in critical CI workflows.
• 📜 What To Know in JavaScript (2026 Edition) - Comprehensive roundup covering ES2025/2026 features, framework updates, runtime landscape, and build tools.
• 📜 The Intl API: The best browser API you're not using
• 📦 View Transitions Toolkit - Utility functions for View Transitions - Filling in gaps for advanced View Transitions patterns. Feature detection, animation optimization, playback control, and automatic navigation types.
• 📦 ESLint 10.2 - Language-aware rules, Temporal support
• 📦 esbuild 0.28 - Import Text proposal, integrity checks
• 📦 Ky 2.0 - JavaScript HTTP client based on the Fetch API

🤭 Fun​

See ya! 👋

This week, we have news about popular React meta-frameworks. Next.js Adapters API should help host it anywhere without compromise. TanStack Start unveils a preview of its React Server Components. The React Compiler port to Rust is being actively worked on.

No major announcement in the React Native world, but still many interesting releases. React Native v0.85 should be released next week.

Axios has been compromised in a major supply chain attack. Stay safe and make sure to adopt security best practices!

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​

Next.js Across Platforms: Adapters, OpenNext, and Our Commitments

Next.js 16.2 now ships with a stable, typed, versioned Adapter API. It was built in collaboration with many partners: OpenNext, Netlify, Cloudflare, AWS Amplify, and Google Cloud. This helps ensure Next.js works well on every platform across all its features. There’s now a public test suite to verify your adapter, and Vercel also relies on it.

The Next.js Ecosystem Working Group explains Vercel’s commitment. Partners will not participate in Next.js design decisions and roadmap, but can still impact it through feedback. They will be kept in the loop early, have time to adapt, and get direct support to fix adapter breakage.

🎥 TanStart Start RSC preview

Tanner Linsley gave a talk at React Paris last week. The 2nd part unveils for the first time what React Server Components will look like in TanStack Start, to be released very soon.

My highlights:

• Primitives: You have full flexibility to decide how to compose these RSC APIs, and can adopt them incrementally. RSC flight payloads are just streams of text; you can sync/cache/persist/manipulate these on your own terms.
• Composite Components: You don’t need ’use client’ directives, although they are supported. This new concept creates an explicit boundary between the server and the client. I assume it should be possible to co-locate client/server components in the same file.
• No Server Actions: A design decision for security reasons, but you can use server functions with validation.

What strikes me is just how different this is from Next.js. It feels more like a library than a framework, and it seems more in sync with the philosophy that initially attracted me to React: you make your own decisions, even though sometimes more flexibility means more glue code and ways to shoot yourself in the foot. In any case, I agree with Tanner: we deserve another React meta-framework—one that’s less opinionated and innovates in a different direction.

• 💸 Lingui - Lightweight, developer-first i18n tooling for modern product teams
• 👀 React Compiler PR - WIP port of React Compiler to Rust - As previously announced, the React Compiler is being ported to Rust through AI. The algorithm is the same, based on a Rust-based Babel AST, already passing 100% of the Babel integration fixture tests. The goal is to integrate nicely with Babel, SWC, and OXC.
• 👀 React PR - Enable Trusted Types integration - The browser Trusted Types API is now Baseline Newly Available, and React now integrates with it to prevent XSS and force you to sanitize unsafe inputs. For example, with dangerouslySetInnerHTML={{__html: policy.createHTML(text)}}.
• 👀 Next.js PR - experimental.useOffline with retries + hook to show offline indicator
• 👀 TanStack Query ESLint PR - Add prefer-query-options rule
• 🗓️ dotJS 2026 -  🇫🇷 Paris - 18 September - Early bird tickets are available until April 14th 6 PM CET, save 100€ on the next price. dotJS comes with dotAI on September 17, book now your early bird ticket for each conference, or a combo to attend both.
• 📜 TanStack Router's New Reactive Core: A Signal Graph - They refactored the router state store, splitting it into many small stores using signals, leading to more efficient fine-grained subscriptions. The original router.state is still a public API, but now derived from the smaller store.
• 📜 When Do You Really Need startTransition? - When an update triggers expensive rendering.
• 📜 Hoistable SVG Defs in React - How to colocate SVG <defs> with components instead of centralizing them.
• 📜 Making React ProseMirror really, really fast
• 📜 Build your own shimmer skeleton that never goes out of sync
• 📜 How Does React Fiber Render Your UI
• 💸 Product for Engineers - WTF does a product manager do? (and why engineers should care)
• 📦 Inertia 3.0 - Build React/modern SPAs with server-based routers - This solution to integrate React and other frontend frameworks with traditional backends (optimized for Laravel) now comes with a Vite 8 plugin, SSR in dev, optimistic updates, and more.
• 📦 TanStack DB 0.6 - Persistence, Offline Support, and Hierarchical Data
• 📦 Astro 6.1 - Improved image optimization, markdown config, expose i18n fallback routes

💸 Sponsor​

Atomic CRM: The Open-Source CRM Toolkit for Developers

Stop struggling with locked-in CRMs and expensive seats. Atomic CRM gives you the power of a professional CRM with the total freedom of open-source.

It’s the only toolkit that combines a high-end user experience with data sovereignty. No more lock-in, no more "renting" your contacts.

Everything you need is already there:

• Native Mobile App for on-the-go access.
• Intuitive Kanban Boards for pipeline management.
• Built-in Email Tracking to stay on top of leads.
• Free SSO for seamless team integration.
• MCP Server Integration for productivity gains.

Why settle for a black box SaaS when you can own the entire platform? Deploy Atomic CRM on your own infrastructure in minutes and regain control over your most valuable asset: your data.

📱 React-Native​

RN ExecuTorch 0.8

Software Mansion just dropped the biggest release to date for React Native ExecuTorch. Version 0.8 expands the library's capabilities far beyond its initial scope, introducing official support for bare React Native applications (no longer strictly tied to Expo) and deep integration with Vision Camera.

Key callouts:

• Vision Camera Integration: You can now seamlessly run ExecuTorch models directly on camera frames in real-time.
• New Computer Vision Models: The release introduces powerful new CV hooks, such as useInstanceSegmentation and useSemanticSegmentation.
• Bare RN Support: You can now use ExecuTorch in bare React Native apps by utilizing the bare React Native resource fetcher instead of the Expo one.
• Expanded NLP: Continues to grow its Natural Language Processing suite with implementations for Speech-to-Text, Text-to-Speech, Text Embeddings, and more.

• 💸 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.
• 👀 Lynx Vue - Vue + Lynx = Vue Native? An AI-powered attempt to bridge native development with a popular framework.
• 🗓️ App.js Conf - 🇵🇱 Kraków - 27-29 May - Join Charlie Cheever, William Candillon, Jay Meistrich, Perttu Lähteenlahti, and more! Prices increase in May—secure your seat now. Get a 15% discount with code "TWIR".
• 📜 Fig case study - How five engineers can scale to millions of users with Expo to provide crucial info about dietary needs.
  📦 Preflight - Simplify Maestro E2E testing for React Native - deep link to any screen, inject state, compare visual regressions with reports, router agnostic.
• 📦 Fast Confetti 2.0 - Rewritten composition API and physics engine, more customization and natural feeling animations.
• 📦 ReactNative.run - Run React Native in a browser, Metro bundler mapped to the web. Similar concept to Expo Snack.
• 📦 Agent Device 0.11 - iOS Simulator no longer takes focus from the current window + lots of fixes and small features
• 📦 Brownie 3.5 - Shared-State Workflow for Brownfield now with Android support.
• 📦 Reshuffled 0.2 - Nitro-powered grid layout - onDragEnd worklet callbacks
• 📦 Reactotron 3.9 - MCP server integration
• 📦 React Native Header Motion 1.0 - New context-first header API, explicit navigation bridging, better performance
• 📦 Unistyles 3.2 - Add support for dropShadow, Suspense trees, RTL ShadowTree updates on Android
• 📦 Morph Card - Native card-to-modal morph transition
• 🤖 Software Mansion skills - Best practices, AI skills for animations, gestures, SVG, and libraries maintained by SWM.
• 🤖 React Navigation AI skills - Official guidelines that help with migration to newer versions and static config.
• 🤖 Codex plugins for React Native development - Build and test RN apps in Codex.
• 🎥 William Candillon - React Native WebGPU in 100 seconds
• 🎥 Beto - react-i18next in React Native & Expo
• 🎙️ React Native Radio 358 - React Native for Meta Quest Part 2: Developer Friendly

🔀 Other​

• ⚠️ axios Compromised on npm - Malicious Versions Drop Remote Access Trojan - axios@1.14.1 and axios@0.30.4 have been compromised for approximately 4 hours on 30 March, and you might have too if you installed dependencies during that time frame. Even if you don’t use it directly, it’s probably a transitive dependency in your projects. Make sure to follow the defensive measures, such as adding min-release-age=7d to your .npmrc.
• 📜 Signals, the push-pull based algorithm
• 📦 Pretext - Text measurement and layout algorithm in pure TypeScript - This innovative lib went viral this week, with fun/impressive but useless demos everywhere. However, the lib unlocks real new possibilities that are impossible or inefficient to achieve with DOM/CSS, as explained in this related article: You're Looking at the Wrong Pretext Demo.
• 📦 Chrome 147 - Element.startViewTransition() - The first browser to ship element-scoped view transitions, enabling multiple view transitions to run simultaneously.
• 📦 Playwright 1.59 - Screencast recording, observability for agents, await using - New features that could be helpful to give feedback to AI agents, and post review videos in PRs.
• 📦 Turborepo 2.9 - 96% faster with agents, sandboxes, and humans
• 📦 Transformers.js 4.0 - Machine Learning for the web - New WebGPU backend
• 📦 Node.js 25.9 - Test runner module mocking improvements, using + AsyncLocalStorage, stream/iter API

🤭 Fun​

See ya! 👋

This week: a new Next.js release, a React Aria-based UI library, Remotion updates, Storybook MCP, and more.

On React Native, multi-threading keeps improving (Worklets, Reanimated), and React Navigation v8 looks close.

Sorry for the weird duplicate email last week, just a mistake 😅

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​

Next.js 16.2

A great minor release that comes with significant performance improvements, but also impactful DX improvements and new interesting features:

• ~400% faster next dev startup
• ~50% faster rendering thanks to a React core RSC contribution
• Redesigned error page
• Server Function logging in dev
• next dev --inspect to attach a Node.js debugger
• Link transitionTypes
• Dev Overlay now renders Error.cause and a hydration diff indicator to identify client/server
• Many new experimental features
• AI improvements: generates AGENTS.md to read versioned docs for agents, browser log forwarding, agent devtools CLI.
• Turbopack improvements: Faster builds, Server Fast Refresh, tree shaking of dynamic imports, PostCSS config, Subresource Integrity, inline loader config, and more.

Related resources:

• 📜Implementing Next.js 16 'use cache' with next-intl Internationalization - Recently updated to include usage of the new experimental.rootParams feature, letting cached components read the locale directly instead of receiving it as a prop.
• 📜 Error Handling in Next.js with catchError - This new unstable_catchError() API is a framework-aware alternative to react-error-boundary that discards Next.js control flow errors and can refetch RSC data.
• 🎥 Ankita Kulkarni - Next.js 16.2 Just Changed AI Coding Forever

• 💸 Product for Engineers - WTF does a product manager do? (and why engineers should care)
• 📜 Start naming your useEffect functions, you will thank me later - Advocates for giving an inline name to Effect functions to convey your intent, even if it’s encapsulated within a custom hook. If you can’t find a decent name, maybe the Effect does too much or should not exist.
• 📜 use(): The Hook That Breaks the Rules (On Purpose)
• 📜 Test IDs are an a11y smell
• 📜 Type Safety in React Router
• 📜 Post-React Compiler React Coding Guide (For AI Agents)
• 💸 Sentry - Why your Next.js stack traces point to random chunks (and how to fix it)
• 📦 React Router 7.13.1 & 7.13.2 - Recent patches introduced new unstable APIs such as the getRequest() API for RSCs, and a future flag to access “pass-through” (un-normalized) Request objects. The <Link unstable_mask> makes it easier to implement URL masking, letting you replicate Instagram-like UX: open gallery images in a modal, and render them full screen on refresh.
• 📦 HeroUI 3.0 - We usually don’t feature most UI libraries, but this one, based on React Aria and Tailwind, has been cooking for a while, and looks more polished than the average UI lib. Although it’s not a cross-platform abstraction, it offers a React Native variant using similar composition patterns and design tokens.
• 📦 Storybook 10.3 - MCP, Vite 8, Next.js 16.2, ESLint 10 - There’s a dedicated article on the Storybook MCP for React.
• 📦 Lucide Icons 1.0 - Quite popular icon solution in React and shacn/ui.
• 📦 Lexical 0.42 - Extensible text editor framework from Meta
• 📦 Hiraki - Zero-dependency React drawer component
• 📦 json-render Ink - Generative UI for the terminal, comes with 27 React components
• 🎥 Jonny Burger - Remotion is getting even better! - Cool features landed recently in the React video creation tool, such as Light Leaks, Sound Effects, Rspack, and AI-related improvements. Let’s not forget the integration with Vercel Sandbox: I wouldn’t be surprised if we could soon fully vibe-code videos directly in the cloud.

💸 Sponsor​

React Native for Fire TV App Development

Your existing React Native codebase can now run on Fire TV with minimal changes, thanks to Amazon Developer’s new operating system, Vega. What’s included:   

• 40+ open-source libraries you already rely on, like reanimated  
• Reduced bundle size - React Native is built into the OS and dynamically linked  
• Vega Module Resolver Preset (VMRP) to automatically replace libraries with their Vega-platform ported equivalencies  
• Vega Studio, a VS code-extension, for building, testing, and optimizing Vega apps  

Ready to reach new audiences? Check out our getting started guide.

📱 React-Native​

Worklets 0.8 - Shareable, Bundle mode improvements

It’s now easier to use the Bundle mode, which unlocks running more complex things in background threads. Also read the dedicated article on Shareable – shared memory's missing piece, a runtime-bound shared memory primitive that was extracted from Reanimated, and that you can now use for non-animation use cases too!

• 💸 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.
• 🔐 Glassworm Strikes Popular React Native Phone Number Packages in Supply Chain Attack - Affects react-native-country-select and react-native-international-phone-number.
• 📜 Glow Effect on TextInput with Reanimated CSS Animations
• 📜 From skeptic to convert: how Fieldy adopted Expo for their AI wearable
• 📦 Reanimated 4.3 - CSS animations for SVG, Shared Values on multiple threads, typesafety
• 📦 React Navigation 7.17 - New .with() method on static config to add a wrapper around the navigator - Also available in v8.alpha. React Navigation wants us to use the Static API more. It unlocks automatic type inference and deep linking, and yet covers most dynamic use cases.
• 📦 React Native Navigation SDK - TIL that Google provides an official React Native library for Google Maps (in beta).
• 📦 Swift 6.3 - C interop, module selectors, Swift Build preview, Android SDK, and more
• 📦 Nitro Fetch 0.2 - Add support for Streaming, formData, AbortController, RN 0.85
• 📦 React Native Windows 0.82 - New-Architecture only
• 📦 Rozenite 1.5 & 1.6 - DevTools for AI Agents, new File System plugin
• 📦 MMKV 4.3 - MMKV upgrade, compareBeforeSet optimization, configure default log level at build time
• 📦 Uniwind 1.6 - Border curve utilities
• 📦 Detox 20.48-50 - Support simulator launch --arch, liquidGlass overlay
• 📦 Agent Device 0.10 - Can control macOS apps
• 🎥 Beto - React Navigation v8 Crash Course — Liquid Glass, Tabs & More
• 🎥 notJust.dev - State of React Native - What's new in 2026
• 🎙️ RNR 357 - React Native 0.82–0.84 & Expo 55

🔀 Other​

• 📜 Fix Flaky Jest Tests in CI with maxWorkers (and why it works) - Tests parallelization can lead to timeouts, but you can fine-tune parameters to reduce test time and flakiness.
• 📜 Who Is Responsible for AI-Generated Code? - Will Node.js ban AI-generated code from its core, even when there’s a human in the loop?
• 📜 The Three Pillars of JavaScript Bloat
• 📦 TypeScript 6.0 - A “bridge” release toward the 7.0 Go rewrite, which is almost complete. This release also changes defaults (strict: true, types: []...), improves subpath imports, adds types for Temporal and upsert, and more.
• 📦 Mixed Signals - Bridging the Server-Client Boundary with Signals - The Preact team is working on a new transport-agnostic solution in which the reactive signal graph spans the network boundary.
• 📦 Edge.js - Running Node apps inside a WebAssembly Sandbox
• 📦 Zero 1.0 - Sync engine is now stable e
• 📦 ArrowJS - UI framework for the agentic era
• 📦 Valibot 1.3 - Smarter pipelines, result caching, and new validators

🤭 Fun​

See ya! 👋