We could feel it was coming, and here it is, delaying just in time for the newsletter! 😇

React 19.3 is finally out, with View Transitions and Fragment Refs stable! And it looks like updated DevTools are also coming soon.

We also got a sneak peek of React Native 0.88 and Expo Modules 2.0.

Let's dive in!

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

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

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⚛️ React​

React 19.3

The new minor version of React is finally out, and it’s a great one!

If you read us regularly, we already disclosed everything 😇, but here’s a reminder of the highlights:

• View Transitions: now stable! Also including the addTransitionType API that lets you customize the animation directly from the code triggering it.
• Fragment Refs: now stable! This lets you get a ref of a <Fragment> and manipulate its underlying children DOM nodes. A quite useful feature unlocking new composition patterns that were previously difficult or requiring a wrapper DOM node.
• use(browser()): a first-class API to opt out a subtree of server-side rendering, replacing patterns based on typeof window and useEffect.
• Trusted Types: security feature to use in conjunction with Content-Security-Policy to prevent XSS attacks.
• RSC can render <Context>: no need to create a wrapper <ContextProvider> component anymore.

Make sure to read that blog post because it contains interactive examples worth taking a look at, in particular to understand View Transitions and Fragment Refs.

• 💸 Sentry - How to wire a custom metric into a Next.js app, chart it, and alert on it. Learn how.
• 👀 React DevTools 8.0 - Suspense Tab enabled, React Element panel, remove Timeline profiler in favor of Performance tracks, display dimmed Activity subtree - The v8 changelog is already merged and gives a sneak peek. Not published yet on npm or extension stores.
• 👀 React DevTools CDT MCP - Speaking of DevTools, the React team is also experimenting with a new package, recently published to npm. It’s not an MCP server, but lets Chrome DevTools discover/register/expose React tools useful for agents to understand and profile your app at runtime.
• 👀 React.dev PR - Document missing SSR and hydration options - Adding the missing API ref documentation for SSR options such as formState, importMap, maxHeadersLength.
• 👀 Next.js PR - Upgrade web-vitals to v6 and report soft navigations - useReportWebVitals() will soon report SPA soft navigations, recently included in Core Web Vitals.
• 📜 React Now Rusted All The Way Out - An overview of the React Compiler in Rust landing in Vite, reporting a 17x speedup over the Babel version, and giving an alternative solution for React Router framework mode users.
• 📜 Replacing Next.js with a vibe-coded "framework" - Replacing Next.js on a personal site with a 5k-line framework Claude architected. Still React/MDX on the server, Preact islands on the client, with 99% less JS shipped. This shows meta-frameworks could eventually die out: their knowledge can be distilled into skills instead, and custom frameworks can be created on demand.
• 📜 Next.js - How Turbopack chunks your JavaScript - Explains the trade-offs behind code splitting strategies and the heuristics used to minimize both download size and request count. Next.js 16.3 comes with experimental options to optimize chunking and fine-tune heuristics based on your site access patterns.
• 📜 Next.js- How we closed 1,500 GitHub issues in one month - No React lesson here: they built an agent to analyze backlog issues to help maintainers close thousands of issues with confidence.
• 💸 Prepathon by Cloudways - Virtual Event - Sep 22 & 23 - Two days of sessions and hands-on activities on AI-assisted building, modern deployment, and what's actually working for developers shipping fast right now. Free to join from anywhere in the world. Register now to save your spot.
• 📦 React Google Maps 1.10 - New new 3d components - The library completed its existing Google Maps 3D support with declarative components for GLB models, HTML markers, polylines, polygons, terrain flattening, and circular paths. A demo is worth a thousand words, so check this 3D Maps Markers demo to see fancy 3D markers, including an animated Model3D Balloon.
• 📦 cn - A new engine for Tailwind class merging and conflict resolution - Claims to be 30x faster than tailwind-merge + clsx with the same APIs. Already integrated in shadcn 4.21. Use npx shadcn migrate cn to migrate. Faster, but 26 KB minified; can be reduced with cn build.
• 📦 Effective RSC - An experimental, Effect-native React Server Components framework for Bun - Ideas are worth taking a look at. RSC pages are Effect.fn() functions with Schema-decoded route params. Effect unlocks various benefits for RSCs, such as type-safe dependency injection and error handling, or request abortion propagation.
• 📦 Vidact - Compiles React code to direct DOM operations - In beta, supporting a growing subset of React 19. Components run only once when they mount.
• 📦 uf - Unified Toolchain for Flow and React - A Rust-based toolchain comparable to Vite+, improving DX for React and Flow. The author’s arguments are worth reading: Flow is a more precise type system than TypeScript for describing React code.
• 📦 DevJar 1.0 - React live code playgrounds - An interesting alternative to CodeSandbox to embed interactive React-based experiences on your site.
• 📦 Bamboo CSS - Zero-runtime CSS-in-JS - A Vite compiler erases the runtime, prunes unused tokens, and fails the build on invalid tokens.
• 📦 Base UI 1.8 - Improves mount perf for Menu/Popover, Combobox.createItems() API, Avatar lazy-loading
• 📦 Rsbuild Plugin React Router 0.6 - Support React Router 8 and its RSC mode
• 📦 Storybook 10.6 - TanStack / NextJS-Vite framework fixes, CLI bindings for agent tools/skills, performance improvements
• 📦 React Window 2.3 - New optional rowKey/columnKey props
• 📦 Jotai 3.0 - Modernized ESM-only package, removing deprecated APIs

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📱 React-Native​

• 💸 build mode - Stop being the code review bottleneck
• 👀 RN 0.88 RC - SwiftPM tooling, DevTools screenshots, ArrayBuffer in TurboModules, Babel Platform inlining improvement, iOS SceneDelegate lifecycle - A sneak peek of the upcoming version from its changelog. Set up SwiftPM via npx react-native spm. Opt-in flags to drop legacy module/component interop will become the default later. Improved Platform.OS/select() inlining unlocks more platform-specific dead code elimination, around 𝕏 17.7KB on iOS and 19.6KB on Android.
• 📣 Expo Go - Login is now required to run projects - iOS-only for now. Will also be applied to Android later.
• 📊 React Native Navigation Benchmarks - Benchmarks the same app rebuilt 4x with different routers, covering cold start, RAM, FPS, and JS measurements. Android tests highlight the most common RN bottleneck.
• 📜 An early look at Expo Modules 2.0 - Modules become plain annotated Swift/Kotlin with no definition() DSL to learn. Sync calls run 2.5-5.6x faster than 1.0 on the same SDK and beat TurboModules in the Expo chart. Experimental, iOS-only. Android in progress.
• 💸 Codemagic Patch - The easiest way to run your own OTA update server, including dashboard and fingerprinting
• 📦 RN QuickJS alpha - Hermes-compatible JSI runtime - An alternative to Hermes. A tiny (~1.5MB) JavaScript engine that compiles to small bytecode bundles for faster startup, with a compatibility layer so most Hermes-dependent libs like Reanimated keep working without changes.
• 📦 Goldie - App Store screenshot generator for coding agents and humans - Useful framework-agnostic mobile tool. Argent replays flows; Goldie prepares store-compliant screenshots and preview videos.
• 📦 RN Continued Task - Background tasks that keep running after your app is backgrounded - One typed API over iOS 26 BGContinuedProcessingTask (Live Activity) + Android WorkManager foreground service, via Nitro. Useful for long-running user-initiated tasks like large exports, uploads, or encoding.
• 📦 Boost 1.7 - Image optimizer now default, RN 0.86 support
• 📦 Rozenite 2.4 - Auto-inject Lynx runtime, one endpoint for debug targets
• 📦 Sentry 8.25 - Feature flag info on native crashes, app.start vitals propagation
• 📦 Argent 0.24 - Physical iOS device support
• 📦 Uniwind 1.12 - Drop-shadow filter
• 📦 Streamdown 0.3 - Worklets 0.10 support
• 📦 Metro MCP 0.15 - MCP SDK v2, safer CDP reconnects pinned to same app, Hermes eval, Appium test gen
• 📦 Agent-Device 0.21 - Human takeovers in remote sessions, faster iOS Simulator opens, install size halved
• 📦 ReactLynx 0.126 - Now on Preact 11, 14% faster background renders, use() support
• 📦 Screen Choreography 0.4 - Shared-element transitions for Expo Router
• 🎙️ React Universe on Air - Running AI in the Browser With Transformers.js

🔀 Other​

• 🗳️ Interop 2027 - Submit and vote for your favorite proposals
• 📜 Running zod Schemas on simdjson - Combining zod with ata, a JSON Schema engine using simdjson native core, and the benefits this brings.
• 📜 Half Past Fetch - await fetch() only waits for the headers, not the actual body, and other interesting details.
• 📜 Async Solid - 3-part series: reads, writes, and network
• 📦 gpu-lexer - Language-agnostic WebGPU syntax highlighter - Crazy idea! Highlighting is not based on language grammars but on a small AI model trained for this purpose.
• 📦 Rslib 1.0 - Multiple output formats, multi-framework support, bundled or bundleless, style/asset support, and more - Looks like an interesting tool, in particular for publishing a component library across many frameworks.
• 📦 Vitest 5.0 - Perf improvements, vi.when, Trace View in Browser Mode, benchmarking API, better defaults, and more
• 📦 htmx 4.0 - fetch() replaces XHR, explicit inheritance, swaps all HTTP responses, and other breaking changes
• 📦 NestJS 12.0 - ESM-first, Rspack replacing webpack, Standard Schema validation, observability SDK
• 📦 Playwright 1.63 - Test locks, Locator improvements, aria/screen snapshots in traces, and more

🤭 Fun​

See ya! 👋

Back from our summer break, we’ll cover news from the last two weeks.

React v19.3 is getting closer. The React Compiler in Rust is now available in Vite and Bun. CSS-in-JS is set to make a comeback.

On the mobile side, React Native keeps refining its public API surface, an important step toward v1.0. Callstack acquired Margelo.

Let's dive in!

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

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

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⚛️ React​

StyleX, the atomic CSS-in-JS library from Meta, has been all the rage on X recently. This probably follows the 𝕏 Cursor migration from Tailwind to StyleX. Or maybe it’s related to Meta open-sourcing Astryx, the extensible, agent-friendly design system built on top and powering thousands of their apps for years.

Anyway, we already covered all that, so here are the recent resources to check out:

• 📜 Styling Linear for the future with StyleX - Linear completed its styled-components to StyleX migration. They don’t explicitly mention Tailwind but still highlight where StyleX does better: strong type-safe constraints, deterministic and performant merging of styles, styling-at-a-distance deliberately hard.
• 📜 A deep dive into StyleX - Hands-on introduction and opinionated conclusion: Tailwind’s terse syntax is better for humans, while StyleX's stronger constraints are better for agents.
• 📦 Tailwind-StyleX - Use Tailwind’s default design tokens directly in StyleX
• 🎙️ Syntax.fm - Why everyone is moving to Stylex?

• 💸 Lingui - New agent skills teach your AI agent to ship production-ready React i18n in one prompt
• 👀 React Types PR - Types for React 19.3 - We already had a hint of what’s coming in the last issue. This DefinitelyTyped PR is still a draft but cautiously confirms the upcoming highlights. A new React DOM browser() API is coming. <ViewTransition> and <Fragment ref> will be stable for React DOM usage, designed to be extended by other platform/renderers, with React Native support likely coming later.
• 📖 React DOM Docs - New use(browser(reason)) API - This new API coming in v19.3 lets you mark a component as browser-only during server rendering. Must be called from a Client Component, within a Suspense boundary. There’s also a new onBrowserBailout() server API introduced for reporting.
• 📖 How to Deploy a TanStack Start app to Vercel - TanStack and Vercel are teaming up to make Vercel a first-class home for TanStack Start, leveraging the Nitro Vite plugin.
• 🔐 Next.js August 2026 Security Release - v16.3.3 and v15.5.24 now available, fixing critical severity vulnerabilities.
• 🗓️ React Advanced London - 🇬🇧 London - 23 & 26 Oct. 40+ talks and 5+ hands-on workshops on modern React & AI tooling for React devs. A great place to catch up with the community - all inside London's historic ex-brewery. Save 10% on your ticket with code "TWIR".
• 📜 Making React Testing Library Tests 43% Faster - The story of using Codex to find performance gains in RTL getByRole() and landing fixes upstream in jsdom.
• 📜 SSG for React with Vite - Argues SSG should be the default over CSR and shows how to implement that with a tiny Vite plugin.
• 💸 build mode - We used context engineering to 5x conversion and 2x activation
• 📦 Vite Plugin React 6.1 - New {compiler: true} option to use the Oxc React Compiler - After landing in Oxlint, the faster Oxc Rust-based React Compiler comes to Vite through a new optional oxc-transform-react package. More than 10x faster than the Babel plugin!
• 📦 Bun 1.4 - The Rust rewrite is ready, alongside so many other things that the blog post probably takes hours to read, so we’ll focus on the React-related updates only. Built-in support for the React Compiler in Rust. A new Bun.markdown.react() turns Markdown into a React Element, supporting component substitution. Node.js compatibility improvements, Next.js 16 compatibility, reduced memory usage.
• 📦 Formisch 1.0 - Schema-first, framework-agnostic form library - The form library coming from the Valibot ecosystem supports React and React Native. Includes migration guides from React Hook Form, Formik, and TanStack Form.
• 📦 TanStack Query 5.102 - Simplify Query Methods - An important release for TanStack Query that finally implemented its RFC to merge 6 former imperative query methods under only 2 unified APIs: query() and infiniteQuery().
• 📦 GPUIX - React renderer for Zed’s GPUI - A new performant alternative to Electron with no WebView to build GPU-accelerated desktop apps.
• 📦 Satori 0.29+ - corner-shape, backdrop-filter, HarfBuzz text shaping, and more - This popular tool widely used to generate OpenGraph images received many interesting updates lately, soon available in Next.js ImageResponse API.
• 📦 React Aria 1.21 - NavigationTree component, Menu async loading
• 📦 Astryx 0.5 - 30 locales, one Escape key, and bottom sheets in core
• 📦 Waku 1.0 RC - Public API fixed, type-safe and instant navigation
• 📦 TanStack Charts 0.16 - Officially in alpha, ready to be field-tested
• 📦 Nuqs 2.10 - The React SPA adapter is now SSR-compatible for Astro, Inertia, Fastify
• 📦 Fumapress 1.0 - Waku-based content site generator
• 📦 React Input Format & Mask 1.0 - Hook/component for building formatted/masked inputs
• 📦 React Hook Form 7.86 & 7.87 - Typesafe getErrors(), trigger shouldTouch, opaque type registry
• 🎙️ This Month in React - Release candidate season; is that an asteroid hitting web educators?

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📱 React-Native​

React Native RFC - Reducing the C/C++ public API

React Native 1.0 is still on the horizon, but to respect Semantic Versioning, it first needs to clearly define its public API surface. Following the work on stable JS/TS and Java/Kotlin APIs, it’s now the turn of the C++ APIs to be clarified.

Until now, there has been no clear distinction between public and private C++ APIs. As a result, community libraries and frameworks sometimes depend on APIs that were never intended to be public. This can cause libraries to break when upgrading React Native, or force the core team to preserve backward compatibility for internal APIs to avoid breaking the ecosystem.

This RFC introduces a new three-tier visibility model for C++ APIs:

• Public: Stable within major versions, safe for libraries to depend on, and exposed through a single umbrella header.
• Framework: Stable within minor versions. Regular usage emits a suppressible warning.
• Private: No stability guarantees. Regular usage emits a suppressible error.

There’s existing tooling to take a snapshot of existing C++ APIs, that it will be adapted to take into accoun this new visibility model. All this will greatly help stabilize the C++ APIs and ensure React Native doesn’t ship unintended breaking changes.

Work is already in progress to apply this visibility model to all C++ APIs. This will be rolled out gradually, first opt-in through a RN_STRICT_API build flag, then opt-out after a grace period, giving time for the public API consumers to migrate to the new umbrella headers. Most APIs have already been categorized, so if your library depends on private or framework APIs, now is probably a good time to chime in.

• 💸 Crisp - React Native chat SDK with TypeScript, push notifications, event listeners and Helpdesk integration
• 📣 Margelo Joins Callstack to Advance High-Performance React Native Engineering - 2 major and complementary React Native consulting companies joining forces. Congrats to Mike, Marc, and all others.
• 📣 EAS Observe - Performance monitoring for Expo apps, now generally available
• 📣 OpenIAP - Now backed by Amazon Developer, bringing IAP to Fire OS and Vega OS
• 👀 React Native PR - ResizeObserver - A Web API spec-compliant implementation has been recently merged, but still behind a flag. More capable than onLayout.
• 📖 The React Native Developer's Security Guide - How to secure the developer's workstation, toolchain, repository, and CI.
• 🗓️ React Native Connection - 🇫🇷 Paris - 24 Sept. Last call to grab your ticket and join the React Native community in Paris! Get a 15% discount with code "TWIR".
• 📜 Speeding up Expensify's networking with NitroFetch - Prefetching on the native side, before the JS bundle is even loaded, reduced startup time by at least 15%.
• 📜 Building a 3D AI assistant using React Native and GPT-Realtime - How to use react-native-filament to render 3D characters and sync its animations with AI responses.
• 📜 Pasting images into TextInput should not be this hard - Pasting an image into a chat input is surprisingly hard. Wrapping TextInput turned out to be the best decision to avoid reimplementing well-known behaviors and APIs.
• 📜 Gesture Handler's Touchable: The Button We Wish We Had Sooner - The old nice button components are deprecated and replaced with the new Touchable component. Per-state scale, opacity, and underlay with custom transition times. Hover support on mobile via mouse and pencil, all without writing a single animation.
• 📜 Working With the React Native Super App Showcase Repository - How to work with super apps with non-trivial examples. App lifecycle, federation setup, monorepo management.
• 📜 React Native Bridgeless, race conditions with concurrent JS runtimes - New Architecture changes how a reload instantiates a new runtime when doing an OTA update. This caused the query to run on the wrong thread, resulting in a crash.
• 💸 ConfigCat - Run A/B Tests in React Native Apps with Feature Flags and Amplitude
• 📦 GTKX - React Navigation on Linux rendered by native libadwaita widgets - The platform-agnostic core of React Navigation now renders to GNOME. Interesting signal for where navigation abstractions can go.
• 📦 Reanimated 4.6 - CSS lifecycle callbacks on native, contrastColor, RN 0.87 support
• 📦 Teleport 1.2 - Fast reparenting on Android, no more empty frames
• 📦 Nitro 0.37 - Props move into core via C++ templates, immutable View prop snapshots
• 📦 Screen Transitions 4.0 - React 19.2 Activity, Reanimated 4, and a v3 migration guide
• 📦 Maestro CLI 2.9 - Test light and dark mode in one flow, Android WebView inspection
• 📦 Uniwind 1.11 - Filter support on iOS and RN 0.87, scoped variables
• 📦 Argent 0.21 - Shake tool for simulators and emulators, profiler fixes
• 📦 Rozenite 2.3 - Lynx support, agent tooling, and plugin testing utilities
• 📦 Agent Device 0.20.10 - AI SDK and MCP integrations, improved iOS snapshots, better Android visibility and gestures, Web hover automation
• 📦 Nitro MLX 0.6 - Turn-scoped inference on iOS, simplify agent chat experience, normalize LLM generation outcomes, configurable TTS
• 🤖 Expo Cloud Simulators - Agents that reproduce TestFlight feedback, fix bugs, and open PRs
• 🤖 Dactyl - Vibe coding platform for native apps that simulates SwiftUI in your browser
• 🎙️ RNR 371 - PanResponder and the anatomy of RN gestures
• 🎙️ RNR 372 - Looking back on Chain React 2026

🔀 Other​

• 👀 CSS - Class Prefix Selector - Not implemented anywhere yet, but CSS will support .prefix-* selectors, letting you target multiple CSS classes at once.
• 👀 HTML Spec PR - Out-of-order streaming - This exciting feature is already in Chrome/Edge and has been
• 📦 pnpm 12.0 - Rust rewrite, project-aware global bins, registry revisions, and more - The upgrade from v11 seems easy, leading to significantly faster installs.
• 📦 Zod 4.5 - Ahead-of-time schema compilation, method memoization, new parsing features - Precompiled schemas parse 3-9x faster. Significant schema memory footprint improvements!
• 📦 vgpu - WebGPU library, designed for agents - The creative library Vercel developed to ship performant shaders. Agents can verify their work with a CLI, even in sandboxes without a GPU.
• 📦 Remix 3.0 RC - Full-stack, single dependency, composable JS framework based on web primitives - I t’s time for the team to freeze feature development and commit to SemVer.
• 📦 Rspack 2.2 - Performance, HMR and import.meta improvements, Browserslist Baseline targets
• 📦 Webpack 5.110 - Performance Hints, built-in CSS/HTML minification, native CSS recommended
• 📦 Node.js 26.8 - Built-in ZIP archive support, REPL inline syntax highlighting
• 📦 Jest 30.5 - whenCalledWith(), describe-level retries, new file watcher, perf and ESM fixes

🤭 Fun​

See ya! 👋

Back after a little break to cover news from the last two weeks. A lot is going on, apparently not everyone is on holiday because we still have many interesting releases, including many RCs from upcoming major versions.

The native React Compiler rollout continues. React v19.3 seems around the corner. Plenty of TanStack Router/Start and Next.js content.

React Native 0.87 is now out, paving the way for v1.0.

🏝️ We’ll be taking another break next week. See you in September. 👋

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

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

💸 Sponsor​

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😎 Friendly: the null check, the off-by-one, the layout that breaks on mobile. The PR is waiting when you wake up.
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⚛️ React​

The React Compiler rollout

The rollout of the Rust-based compiler continues:

• Oxlint 1.79 just added support. The new oxc-transform-react package also unlocks automatic memoization and will soon be supported in @vitejs/plugin-react (PR already merged). Along the way, they made many improvements to performance and behavior over the original Rust port and even found bugs in the Babel version.
• Biome 2.5.8 is out with a new useReactCompiler nursery/experimental rule, although it’s an initial version and there’s remaining work to be done such as splitting the rule into many smaller ones.
• Bun 1.4 will include React Compiler support through --react-compiler and Bun.build({reactCompiler: true}).

• 💸 build mode - Why we're bullish on loops
• 👀 React PR - Enable parallel transitions flag everywhere - Parallel transitions are already used in production at Meta, and are likely to come in v19.3 for both React and React Native.
• 👀 TanStack Router reimplemented - Prominent Node.js contributor Yagiz Nizipli reimplemented TanStack Router APIs, claiming a drop-in replacement up to 19x faster. Tanner Linsley answers.
• 💬 Next.js team - Ask us anything on Reddit and Ask us anything on X- Apart from the many Next.js-related discussions, happy to hear that Fragment refs and ViewTransition will be stable in React 19.3! Also gives a preview of upcoming features such as granular prerendering and new data fetching primitives.
• 💬 React Router - Changes planned for v9 - This discussion will keep track of what’s coming in the next major, scheduled for mid-2027.
• 🐦 Cursor completed its migration from Solid (v1) to React and StyleX - In practice, signal-based approaches created perf footguns. Their new product “Bot” forbids the direct usage of useEffect.
• 🗓️ React Summit US - 🇺🇸 New York - 17 & 20 Nov. Incredible lineup announced featuring Kent C. Dodds, Shaundai Person, Ken Wheeler, Tanner Linsley, and Seth Webster! Get a 10% discount with code "TWIR".
• 📜 Impersonating the DOM - A quite interesting lib design technique used by React Aria. createPortal(children, fakeDocument) lets you eavesdrop on the reconciler operations and get access to the rendered children. This pattern lets you do various things, such as hoisting/deduplicating SVG <defs>.
• 📜 How Lovable.dev moved from Next.js to TanStack Start - Lovable builds and hosts primarily TanStack Start apps, so they decided to adopt the framework for their flagship app to dogfood their own platform and turn it into a typical Lovable app. This describes the incremental migration approach: making the code framework-agnostic, using agents, migrating related routes together, and ensuring both frameworks can run simultaneously. The migration brought better DX/AX and simpler abstractions, but TanStack Start requires more bundler customization.
• 📜 Making Navigations Instant in v0 - Next.js 16.3 now supports pre-rendering dynamic content at runtime, making navigation feel instantaneous. Assert this behavior with a new Playwright instant() helper, and let your AI agents fix the failing tests with the provided skill.
• 📜 Reliable Query Prefetching with TanStack Router - Reliable prefetching requires using the same query options in the route loader prefetches and component queries, which may diverge at scale. Put query options in Route Context to keep them in sync.
• 📜 Inside a TanStack Router Navigation - Explains the lifecycle of a navigation and how edge cases are handled, such as using a transaction and private lane system to handle race conditions.
• 📜 Building App-like Experiences with Next.js 16.3 - A nice overview of all the cutting-edge Next.js features useful to build modern web apps, illustrated through 4 open source app demos.
• 📜 Coordinating Optimistic Updates in Next.js - Use useActionState and useOptimistic to coordinate overlapping transitions with an Action queue, a reducer, and optimistic state with automatic rollbacks. Not so easy to wire, but this pattern can be learned once and applied in many places.
• 📜 Using next/root-params in Next.js 16.3 - A game-changer for next-intl, that can now read a [locale] param of a root layout in all Server Components.
• 💸 TrustedRouter - Add every AI model to your React app through one OpenAI-compatible API with automatic failover and no prompt or output logs
• 📦 OXC for TSRX - Parse, lint, format .tsrx files with Oxc - This promising spiritual successor to JSX now has a fast Rust-based toolchain.
• 📦 GTKX 1.0 - The React framework for Linux, declarative layer on top of GTK4
• 📦 Unhead 3.3 - Framework-agnostic <head> component - Support <Fragment>, various React fixes
• 📦 Astryx 0.3 & 0.4 - Meta’s fully customizable design system based on StyleX
• 📦 React-Hook-Form 7.85 - Support React <Activity>
• 📦 shadcn React 0.3 - New <Questionnaire> component for multi-step question flows
• 📦 Fig - A small TypeScript UI runtime based on React Fiber.
• 📦 Rshono - Minimalist web framework based on Hono, Rspack and React Server Components
• 📦 Sugar High 2.0 - Lightweight, composable syntax highlighter with React bindings
• 📦 TanStack Form 2.0 alpha - Redesigned APIs, new validation pipeline, performance and type-safety improvements
• 📦 Preact 11.0 RC - use(), createPortal(), useEffectEvent(), and more
• 📦 Humid 1.0 - React server-side rendering in Rails using V8 / mini_racer
• 🎥 Lucas Barake - The state library that made me drop Zustand - Effect v4 is now in RC, comes with a reactive Atom implementation including first-class React bindings.
• 🎙️ This Month in React - July 2026 - React-alikes, governance, and state management

💸 Sponsor​

New Speakers & Pre-Conference Workshop

Carl Ross (OpenAI) and Nick Miller (Cursor) have recently joined the lineup, alongside other top AI engineers from Google, Meta, Amazon, Expo and other tech giants.

Agenda is now almost full with talks covering 4 main angles:

• Vibe Coding
• Agentic Engineering Fundamentals
• Orchestration & Multi-Agent Systems
• Adoption & Case Studies

The last few spots are still available for the free workshop hosted by Amazon on September 16: Build Your Own Software (re)Factory. First come, first served! Book your spot at agent.sh/workshop.

Join Agent Conf in Warsaw on September 17–18 to get better at coding with AI agents.

Conference tickets are available at agent.sh.

📱 React-Native​

React Native 0.87

Like clockwork, React Native 0.87 is out! It's the biggest step towards RN 1.0 in a long time, coming with intentional breaking changes, so it deserves more than a routine upgrade note.

• Strict TypeScript API by default: Types are generated automatically from source and scoped to the package's root, so internal file changes are no longer breaking changes. Dedicated *Instance types (e.g. ViewInstance, TextInputInstance) improve ref typing of built-in components, and doc comments now flow straight into your IDE. Alex Hunt goes into detail about the work that went into this: compatibility fixes for Tailwind, Uniwind, and Expo Web, plus an upstream TypeScript fix for hidden Libraries/ subpaths.
• Faster, leaner Metro: Source map generation is now 2x faster and uses half of the memory. Support for TypeScript and ESM config files.
  Experimental Swift Package Manager support for iOS: Opt-in and additive: Xcode is enough — no Ruby, no Bundler, no CocoaPods. CocoaPods remains the default path.
• Android Gradle Plugin (AGP) v9: First RN release to support AGP 9, with recommended opt-outs for built-in Kotlin and the new DSL until AGP 10.x.
• API surface cleanup: Many deprecated APIs have been removed, including flagship ones like InteractionManager. New APIs are marked as deprecated and scheduled to be removed later. AbortController is now complete and backgroundImage: linear-gradient/radial-gradient is now stable.
• New requirements: The minimum toolchain requirements is now Node.js 22, AGP 9, and Kotlin 2.0+.

• 💸 Crisp - Add in-app customer support to your React Native or Expo app in just a few lines of code
• 📖 RN docs - Strict TypeScript API guide updated for 0.87: ref types, setup-env, FAQs
• 🗓️ React Native Connection - 🇫🇷 Paris - 24 Sept. Deep dive into mobile development with top-tier experts from Expo, Software Mansion and Callstack. Regular ticket window closing August 31. Save 15% on your ticket with code "TWIR".
• 📜 Fitting RAG in Your Pocket: Local Retrieval in React Native - How to build on-device data retrieval for your apps using @react-native-ai/llama and native vector search with nitro-sqlite + sqlite-vec
• 📜 The Memory Hermes Can't See: Stale Shadow Nodes in React Native - Recent Hermes V1 memory regression triggered additional experiments that surfaced a fascinating finding about the Shadow Tree. Unmounting views causes the React component and the objects attached to it to still exist in memory, which can only be cleaned up by GC run.
• 📜 How we raised mobile end-to-end test stability to 98% - Shopify stopped patching their Appium E2E suite to fix flaky tests with an opinionated wrapper. They moved away from testing implementation details with TestIDs to using computer vision.
• 📜 How to build a resilient activity tracker with Expo - Build an Expo app with sessions that survive backgrounding, app kills, and crashes.
• 📜 Scanning Barcodes in React Native Apps: The Complete Guide (2026)
• 📜 Fable 5 vs GPT-5.6 Sol: I spent $2,000 and 2 billion tokens to find out who wins
• 📜 Haptic Feedback on the Web: Why the Web Deliberately Refuses to Be as Tactile as Native Apps
• 💸 ConfigCat - Release React Native Features with Feature Flags, Without Redeploying
• 📦 Firebase 26 - New architecture foundation: TurboModules, TypeScript parity, modular API
• 📦 Skia 2.11 - Updates Skia engine, drive multiple animated props from one shared value
• 📦 Rozenite 2.1 - Unified plugin UI, feature flags plugin, agent skills CLI
• 📦 Sentry 8.23 - Swift pod migration - Action required for RN < 0.75, use_modular_headers! is required in the Podfile now that RNSentry ships Swift
• 📦 Screens 4.27 - RN 0.87 support, experimental ScrollToTopGuard
• 📦 Maestro 2.8 - Swipe from a point inside an element, variables in permissions, screenshot tresholds, and Maestro Cloud improvements
• 📦 Enriched Markdown 1.0 - First stable release: block-editing input pipeline, iOS SwiftUI renderer
• 📦 Pager View 9.0 - Replaces legacy pager implementation with Jetpack Compose on Android
• 📦 Gesture Handler 3.2 - Pressable on Touchable, hover callbacks, Strict TS API, AGP 9
• 📦 Worklets 0.12 - WeakRef on worklet runtimes, Bundle Mode loading on par with RN, enableLocking option
• 📦 Nitro Fetch 1.6 - tvOS support, shared iOS URLCache, prefetch cache fixes
• 📦 Expo Pretext 1.2 - Fixes Android module that never compiled, web font measurement fix
• 📦 Argent 0.20 - Concurrent flow recordings, Chromium per launch step, MCP registry, .env secrets
• 📦 Safe Area Context 5.9 - AGP 9 support, web resize/inset fixes
• 🤖 Expo Tuft - Higher-order agent reachable from Slack/iMessage, runs on an always-on machine - Technical preview of a new Expo AI product.
• 🤖 MargeloChat - Open-source ChatGPT-style RN AI chat app with RAG and streaming
• 🤖 iOS Simulator MCP 2.1 - App lifecycle tools: terminate_app, open_url, list_apps
• 🎥 Callstack - Can a Specialized Model Beat Frontier Models at React Native?
• 🎙️ RNR 369 - AppRegistry Explained - Breaks down RN’s AppRegistry. What’s under the hood. From Expo and app entry points to brownfield apps and more.
• 🎙️ RNR 370 - CopilotKit with Mike Ryan - Bringing AI agents to RN apps. Breaks down of AG-UI, generative UI, shared state, and the guardrails needed for trustworthy experiences.

🔀 Other​

• 📜 CSS: the bomb inside your inbox - Novel hacking techniques showing how CSS sanitizers in Gmail/Outlook/Fastmail can be worked around to steal tokens, hijack clicks, or keylog passwords.
• 📜 How Variable Mangling Works in Oxc Minifier - Replacing original variable names with shorter ones with a slot assignment algorithm.
• 📦 Node.js 26.7 - Perfetto tracing support
• 📦 Astro 7.2 - Incremental static builds, opt out of session support
• 📦 pnpm 12.0 RC - pnpm 12 has been rewritten in Rust and should be easy to adopt, apart from 5 things that differ.
• 📦 Vitest 5.0 RC - Clear mocks by default, fake timers now mock Temporal, and more - Stable version expected in 2-3 weeks, check the full v5 migration guide.
• 📦 Solid 2.0 RC - First-class async support, new Rust-based compiler toolchain, simpler API surface
• 📦 SvelteKit 3.0 RC - Vite 8 + Rolldown, error boundaries, validated env vars, remote functions

🤭 Fun​

See ya! 👋

This week, Next.js 16.3 officially shipped, bringing Instant Navigations to the App Router and cutting dev server RAM usage by up to 90%.

On the React Native side, a new, faster PlainText component and a deep dive into Vision Camera v5.

Across the broader dev ecosystem, GitHub stacked PRs finally entered public preview with native base retargeting and a gh-stack CLI.

Let's dive in!

🏝️FYI: we’re taking a break next week; see you soon!

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

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

💸 Sponsor​

Ship AI generated code safely with Meticulous.

Claude writes your code. Claude reviews your code. Claude fixes the review comments. And somehow, you're the one getting paged at 2am when it breaks in prod.

Fortunately, top AI-driven teams like Dropbox, Notion, LaunchDarkly, and Wiz rely on Meticulous to run 1000s of e2e UI tests autonomously, covering every user flow, edge case, role and permutation. Built by ex-Palantir engineers, Meticulous gives you near-exhaustive coverage in weeks, without any developer effort. 

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)

Check it out - and see why one engineering leader at Dropbox said that “once we started using Meticulous, we couldn’t imagine working without it.”

⚛️ React​

Next.js 16.3 - Instant Navigations and 90% less RAM in dev

Next.js 16.3 officially shipped with major engine and runtime upgrades. Long dev sessions now use up to 90% less RAM. Turbopack now supports Vite-like import.meta.glob(), and rebuilds get faster thanks to artifact caching. SSR handles up to 22% more requests. TypeScript 7 is supported by default through a new tsc CLI integration. Various AI improvements include versioned docs for agents, skills, and actionable errors. There are also new APIs such as catchError to create custom error boundaries, and next/root-params useful for i18n.

The core release focuses on Instant Navigations (built on top of Cache Components) to give server-driven apps the snappy responsiveness of an SPA. This signals a clear architectural shift for Next.js: returning to a dynamic-by-default model with fully explicit, predictable caching.

TanStack Table V9

This new major version is finally here, after more than 2 years of work. It lays a new foundation for years to come, with a tree-shakable plugin architecture, state management powered by TanStack Store, new features, major performance improvements, hundreds of bug fixes, and more.

As a framework-agnostic lib, it comes with many framework-specific adapters, including new ones. The existing ones have been refreshed around a new reactivity model. For React developers specifically, it now supports React 18+, works well with the React Compiler, and unlocks more granular reads based on atoms/selectors to avoid useless re-renders.

• 💸 TrustedRouter - Build AI features with hundreds of models through one OpenAI-compatible API with failover and no prompt or output logs
• 👀 React Core PR - browser() API - Exposes a client-only react-dom API to safely suspend SSR for browser-specific components, eliminating hacky server error-suppression workarounds.
• 📜 React 19’s useActionState: Preventing Sequenced Double Submits - Explains how React 19’s useActionState queue behaves and how to handle isPending states to prevent duplicate submits.
• 📜 Next.js 16 useOptimistic: Fixing Rapid-Click Race Conditions & Auto-Rollbacks - Covers React 19 optimistic UI edge cases, demonstrating why manual rollback logic is redundant, how to prevent overlapping requests per item, and how to handle Next.js 16 cache revalidation with updateTag.
• 📜 Visual Regression Testing: The Most Important Test You're Not Running - demonstrates how visual regression tests catch layout and CSS bugs missed by functional tests, with setup examples for E2E test runners and component environments.
• 📜 React Arven: Optimizing React Context Performance for Complex Local State - Introduces a 1.4 kB dependency-free library that uses useSyncExternalStore and stable action refs to eliminate React Context re-renders when orchestrating complex local state.
• 📜 Architectural Patterns for Generative UI in React - Breaks down 3 approaches to letting LLMs build UI dynamically — schema-constrained output, a declarative JSON spec (A2UI/AG-UI), and open-ended sandboxed code generation
• 💸 build mode - Stop being the code review bottleneck
• 📦 TanStack Charts pre-alpha - Minimal ~8 KiB core, framework-agnostic charting primitives on D3, with first-class React bindings
• 📦 React Aria 1.20 - Adds PreviewTrigger popovers, TokenField for inline tags, native context menus, interactive table rows, and Next.js 16 RSC collection support
• 📦 React Three Fiber 9.7 - Hardens its reconciler to align with react-dom, fixing child desyncs, prop resets, and event priority
• 📦 use-webmcp-tool - Experimental project from the Chrome team, a React abstraction for exposing client-side tools to browser AI agents via WebMCP
• 📦 MobX 7.0 - Drops legacy compatibility, reduces ESM bundle size while maintaining the mobx-react-lite vs mobx-react architecture
• 📦 SWR 2.5 - Adds experimental RSC data preloading to hydrate client cache without duplicate requests, plus a new unload() API to purge cache and abort in-flight queries
• 📦 React Hook Form 7.84 - Enhances <Form /> submit behavior, improves performance, reduces bundle size
• 📦 BaseUI 1.7 - Reduces bundle size (~3%), enhances mobile UX and <ScrollArea.Thumb> overscroll feedback, and bundles accessibility and bug fixes
• 📦 Astryx 0.2 - RTL auto-mirroring with a dedicated ESLint rule, tooltip status variant for inputs, scriptable CLI engine APIs, removed TabList orientation and CLI JSON types
• 📦 React Bits upgrade - 27 new React components for creative developers
• 📦 Styled Components 6.5 - Much faster type-checking, stricter RN styles, new CustomStyle type helper

💸 Sponsor​

Stop Rebuilding Forms for Every Business Change

Hardcoded forms create a costly cycle: every new field, workflow, validation rule or customer-specific variation becomes another development task, code review and deployment.

SurveyJS breaks that cycle. Developers embed a JSON-powered form builder and reusable form runtime into their React application once. Business teams can then create and update forms through configuration rather than application code.

• Ship new forms faster
• Reduce repetitive frontend work
• Launch form changes without waiting for a release cycle
• Keep full control over your backend, data, security, and branding

Your developers own the platform. Your business teams manage the forms. 🙂

📱 React-Native​

• 💸 Crisp - Add customer support chat to your React Native app with our SDK for iOS, Android and Expo
• 🐦 Faster touchables in Gesture Handler coming soon - RNGH’s Touchable rendered ~300ms faster than RN’s Pressable in a list with 1000 buttons in one of the benchmarks, definitely worth keeping an eye on this!
• 👀 Simulators for agents from Expo coming soon - Expo announced a waitlist for on-demand cloud simulators. This helps AI agents build, run, and visually verify app changes.
• 📖 Gesture Handler Docs - New interactive docs on callbacks & events - You can now see the callbacks chain and get a better understanding of how they resolve.
• 📜 Building a Real-Time Face Recognition App in React Native with VisionCamera - a full on-device pipeline built on VisionCamera's frame processors, ONNX Runtime, and OpenCV - with real benchmarks and hard-won lessons like mirrored-frame bugs.
• 📜 Migration to React Native in 2026 Starts With a Delivery Question: brownfield vs. greenfield migration is a choice around how you ship. Also, a useful take on where AI agents help the port - and where they don't.
• 💸 ConfigCat - Run A/B Tests in React Native Apps with Feature Flags and Amplitude
• 📦 React Native Plain Text - A faster, lower memory alternative to use for simple texts, currently limited to static, single-style text. It’s faster than RN’s core `<Text>` component, and also outperforms the raw NativeText/RCTText according to 𝕏 the author's benchmark.
• 📦 Enriched HTML 1.1 - Stable web support with full feature parity
• 📦 React Native Firebase App 26.1 - migrated to turbo Modules, requires new architecture
• 📦 React Native System Navigation Bar 3.0 - Rewritten on new architecture
• 📦 React Native Blur 5.0 - Requires new architecture and RN 0.80+, raw native components deprecated, added ref forwarding and react-native-web support
• 📦 Sentry 8.21 - Improved session replay details
• 📦 Argent 0.18 - Rotate directive for flow automation, single-element snapshot diffs, human-readable tool-server logging, CSS combinator flow selectors
• 📦 Voltra 2.2 - Improved build stability, runtime props support
• 📦 React Native Purchases 10.6 - Supports multipage paywalls
• 📦 React Native Ease 0.8 - Initial velocity for spring transitions, iOS retain-cycle fix
• 🤖 AppControlBench - Compare models, tools, cost, and test runs across real iOS app-control tasks - AI benchmark comparing the performance of tools such as Argent and Agent-Device with various models.
• 🎥 Callstack - Build a React Native News Agent With Eve
• 🎙️ React Universe on Air - VisionCamera V5 With Marc Rousavy

🔀 Other​

• 📣 GitHub stacked PRs now in public preview - Adding native PR stacking with automatic base retargeting, partial merges, and official CLI (gh-stack) integration.
• 📜 Declarative Route and Navigation Matching in CSS - A proposed W3C CSS spec that moves route-based view-transition logic out of JS.
• 📜 Disrupting supply chain attacks on npm and GitHub Actions - Summary of the changes shipped across npm and GitHub Actions in the past few months, aimed to disrupt supply chain attack techniques and limit their impact.
• 📦 Flue 2.0 - “React for Agents” - introduces a hooks-based architecture (useModel, useTool, usePersistentState) that replaces static configuration with dynamic agents capable of swapping models and capabilities at runtime.
• 📦 SolidStart 2.0 - Modernizes the foundation for building full-stack applications with Solid v1
• 📦 Node 24.19 - Stabilized stream.compose, new TLS/TCP configuration options, --experimental-import-text flag, custom buffers in fs.readFile()
• 📦 scriptc - Compile TypeScript to tiny native binaries (no Node/V8)
• 📦 Vite 8.2 - Top-level input option (bypassing build.rolldownOptions), warns for unsupported native loader features, PostCSS config types, and dev URLs labeled by interface
• 📦 Hono 4.13 - Up to 1.25x perf gains, adds HTTP QUERY method support, a Method Not Allowed middleware, and various improvements
• 📦 pnpm 11.20 - Fixes multi-registry package substitution vulnerability with registry-qualified keys

🤭 Fun​

See ya! 👋

This week we have an interesting React challenger, keeping its mental model but compiled ahead of time. Also various major announcements from the TanStack side.

On the mobile side, we have interesting RN 0.87 PRs to look at, discussions around workers / worklets, a WebGPU/Skia integration, and React Navigation 8 / Screens 5 progress.

Last week, many proposals progressed during a TC39 meeting. npm is going to scan for malware at publish time. Core Web Vitals will now measure SPA soft navigation.

Let's dive in!

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

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

💸 Sponsor​

Ship AI generated code safely with Meticulous.

Claude writes your code. Claude reviews your code. Claude fixes the review comments. And somehow, you're the one getting paged at 2am when it breaks in prod.

Fortunately, top AI-driven teams like Dropbox, Notion, LaunchDarkly, and Wiz rely on Meticulous to run 1000s of e2e UI tests autonomously, covering every user flow, edge case, role and permutation. Built by ex-Palantir engineers, Meticulous gives you near-exhaustive coverage in weeks, without any developer effort. 

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)

Check it out - and see why one engineering leader at Dropbox said that “once we started using Meticulous, we couldn’t imagine working without it.”

⚛️ React​

Octane – React's programming model, compiled

Dominic Gannaway – former React/Svelte team member, creator of Inferno – unveiled his new project, Octane, as a successor to Inferno.

It keeps React’s programming model, but compiles Hooks, Suspense, and Actions ahead of time. It improves performance, removing the Virtual DOM and using native browser events. You don’t need to respect the rules of hooks or to maintain dependency arrays manually. You can use it with JSX/TSX, but it also supports TSRX to improve your developer experience.

This looks like a quite serious React challenger using the same mental model, already receiving contributions from maintainers of popular project. It comes from day 1 with integrations for libraries such as TanStack, React Three Fiber, Lynx, StyleX, NativeScript, and more.

• 💸 Sentry - Stop logging everything. Learn what's worth capturing and how to structure it properly.
• 👀 Next.js docs preview - Offline support - With experimental.useOffline enabled, Next.js will no longer throw when the network is down, keeping requests pending with a retry.
• 🗓️ React Advanced London - 🇬🇧 London - 23 & 26 Oct. First speakers announced: TanStack Maintainer, Engineer at Vercel, Apollo TypeScript Client maintainer & more. All in a historic ex-brewery. Get 10% off with code "TWIR".
• 📜 TanStack - We Stopped Using RSC on TanStack.com - Tanner explains why the TanStack website adopted RSC in the first place, keeping heavy dependencies like the Shiki syntax highlighter on the server. But the maths change if the heavy libraries become smaller: it’s better to use SSR, ship a small lib once and render multiple times on the client than to render each blog post on the server and ship an RSC/Flight payload. To achieve better performance with SSR, TanStack had to introduce 2 new deliberately small projects: TanStack Markdown and TanStack Highlight, available in alpha. In TanStack Start, you can freely decide to use SSR or RSC when it makes sense.
• 📜 Making Referential Stability a Type - A really cool idea to tag memoized values directly in the type system with Stable<T>. With stableref/react, you can enforce APIs to use memoized values and get compilation errors if props or dependency array elements are not memoized.
• 📜 Experimenting with RSCs for Performance and UX in Next.js - 3 Next.js 16.3 experiments to keep work on the server: pagination via ?page=, a search field that keeps focus while results stream, JSX from actions.
• 📜 How to find a Next.js memory leak in production - 3 memory leaks in Next.js and how to spot each in heap snapshots. These have recently been fixed by Dan Abramov for v16.3.
• 📜 The state of zero-runtime CSS-in-JS, mid-2026 - A recent field map of compile-time CSS-in-JS covering Vanilla-Extract, Panda CSS, StyleX, next-yak, Linaria, dx-styles.
• 📜 How to Think in Remix UI Instead of React - A pragmatic intro to Remix v3 from a React perspective. Components run once, return a render closure, and you re-render with this.update(). This gives you more control than React hooks, but requires more boilerplate.
• 📜 The Absolute State of Management - Alex Russel argues React's state management libs don't manage state; they only propagate it with pub/sub. Real state management needs time and ordering: CRDTs, sync engines, vector clocks.
• 📦 Canvas UI - Creative components based on WebGPU and HTML-in-canvas - A cool project for creative work. Framework-agnostic, coming with first-class React integration.
• 📦 TanStack Table v9 beta.58 - Support Cell Selection and Keyboard Navigation
• 📦 React Router 8.3 - RSC Entry Updates
• 📦 Reassure 1.6 - Performance testing for React and React Native - Stability measures
• 📦 Astryx 0.1.8 & 0.1.9
• 🎥 Jack Herrington - TanStack is Doing What? - Stream announcing TanStack changes with guests. TanStack now has a new look, a design system, and a lead designer.
• 🎥 Shruti Kapoor - React Debugging with Performance Tracks

💸 Sponsor​

Stop Rebuilding Forms for Every Business Change

Hardcoded forms create a costly cycle: every new field, workflow, validation rule or customer-specific variation becomes another development task, code review and deployment.

SurveyJS breaks that cycle. Developers embed a JSON-powered form builder and reusable form runtime into their React application once. Business teams can then create and update forms through configuration rather than application code.

• Ship new forms faster
• Reduce repetitive frontend work
• Launch form changes without waiting for a release cycle
• Keep full control over your backend, data, security, and branding

Your developers own the platform. Your business teams manage the forms. 🙂

📱 React-Native​

• 💸 PostHog - The do's and don'ts of minimum viable product marketing
• 💬 React Native RFC - CSS calc() in React Native - A proposal to add a C++ implementation, so host platforms do not need to be aware of its existence. Aligns more closely with the web, avoiding onLayout and useless render passes.
• 👀 React Native PR - Add SafeAreaProvider, safe-area hooks, and SafeAreaView edges/mode - 2 recent PRs show that SafeAreaView will either be removed from core, or improved to catch up with react-native-safe-area-context features. We are still not sure which PR will be merged; stay tuned.
• 👀 RN Screens 5.0 Alpha - Rewritten Stack implementation, Android based on Material Design 3 - The first release of an upcoming rewrite of RN Screens. The redesign of the Native Stack addresses shortcomings of the v4 model and will be an important piece for React Navigation v8.
• 👀 React Native PR - backgroundImage stable in RN 0.87 - linear and radial gradients will officially work without the need for 3rd-party dependencies.
• 👀 React Navigation PR - v8 will work on Web without React Native Web
• 📖 React Navigation 8 - New docs on Suspense and pending UI
• 📜 From Expo Router to Detour: Deferred deep linking the right way - Standard deep links break at the store boundary, causing an Installation Gap when the app is not installed yet. The solution is to use deferred deep linking to capture user intent and replay it on the app’s first launch.
• 📜 Marc Rousavy just wanted to build react-native libraries but ended up fixing bugs in Apple/Swift compiler... - A compiler bug caused iOS 16 to crash the app in production. The optimizer hoisted a weakly imported constant above its #available guard. Although the issue is real, it was possible to work around it, requiring an upstream compiler fix.
• 📜 Install dev and production side by side with app variants - A guide to setting up app variants for improved dev experience.
• 📜 Why We Did Not Move MMKV Writes to a Worklet: The Serialization Cost
• 💸 ConfigCat - Release React Native Features with Feature Flags, Without Redeploying
• 📦 RN Workers 1.0 Alpha - Separate Hermes runtimes created on a dedicated thread to enable real multithreading. Each worker has its own bundle. Communication between them is using messages via a structured-clone codec. This discussion explain differences with Worklets. Hermes also supports WebWorkers out of the box (unstable) that will be in a public release soon.
• 📦 React Native WebGPU 0.7 - importDevice() - This lets you import the RN Skia Graphite WebGPU device. It’s the foundation for zero-copy interop between the two worlds, letting you use WebGPU textures in Skia efficiently.
• 📦 Skia 2.10 - Migrates from HostObject to JSI NativeState, requires Reanimated v4 - Related: Tzvetan Mikov previously explained why the Hermes team strongly favors JSI NativeState over HostObject.
• 📦 VisionCamera 5.2 - New SkiaCamera controls (zoom, exposure, torch), stretch GPU Resizer mode
• 📦 Nitro 0.36.2 & 0.36.3 - Faster Record<K,V> conversion, RN 0.87 support, drops @FastNative from Sync callbacks
• 📦 Expo Open OTA 3.0 - Self-hosted Expo Updates server with multi-app, rollouts, A/B testing
• 📦 Argent 0.17 - Screen recording tools, pinch gesture, Windows support for Android and Chromium
• 📦 Canvas Kit - A batteries-included 2D canvas framework built on RN Skia
• 📦 React Native Social Auth - Sign in with Google for Android, iOS, Expo
• 📦 Memory Footprint - Measure React Native app's memory footprint on iOS and Android
• 📦 Maestro 2.7 - MCP tool to debug Cloud runs with your AI agent, per-flow debug artifacts
• 📦 Radon 1.18 - Send props, styles, state & errors from element inspector to AI chat context
• 📦 Agent Device 0.20.1 - Vega OS support, broader physical iOS support, secret-safe replay and recording improvements
• 📦 Screen Transitions 3.9 - Teleport-powered handoff and escapeClipping, simplified Boundary API, navigation zoom
• 📦 Sentry 8.20 - iOS screenshot regression fix, Gradle Configuration Cache compatibility
• 📦 Nitro Fetch 1.5.3 - 3x faster streaming via shared URLSession
• 🤖 Maestro CLI 2.7 - MCP for AI Coding Agents
• 🎥 Expo - How to add an iOS Widget to your app
• 🎙️ RNR 368 - RNR Explains: Fabric - A look into how the Fabric renderer works. How it speeds up mobile apps and unlocks concurrent React features.

🔀 Other​

• 🦋 TC39 advanced Promise.allKeyed, Error.code, Map.take, RegExp Linear Matching, and more - I reply and explain why I’m excited about allKeyed, RegExp Linear Matching, and Composites moving to an interning-based approach (getting closer to the former Records & Tuples proposal).
• 📣 Core Web Vitals - Measuring soft navigations - Measuring SPA soft navigations (page transitions with history.pushState) will be enabled by default in Chrome 151, and integrated into DevTools, the web-vitals package, Lighthouse, PageSpeed Insights, and Real User Monitoring tools.
• 📣 GitHub - npm publish-time malware scanning and dual-use metadata - Newly published packages will be automatically scanned before they become available, introducing a delay of 5-15 minutes between publishing and availability.
• 📊 State of CSS - Survey results
• 📜 ECMAScript Deferred Module Evaluation with import defer - This lazy module evaluation feature is stage 3, already implemented in most tools, and close to becoming part of the standard.
• 📜 Your SPA Is Leaking Memory. Soak Test It - A practical Playwright recipe to catch SPA memory leaks. Loop a user flow, read Chrome's node/listener counts before and after, assert.
• 📦 Playwright 1.62 - New component testing model, AbortSignal, WebP screenshots, isolated retries
• 📦 Webpack 5.109 - Built-in CSS, HTML, TypeScript support enabled by default, Vite-compatible import.meta APIs, asset query suffixes
• 📦 Firefox 153 - Picture-in-Picture, import as text, popover="hint"

🤭 Fun​

See ya! 👋