Welcome to the React Universe

Learn how React renderers work, why RNTL needed a new test renderer, and what it takes to connect React Reconciler to a host environment.

Learn how to build iOS Live Activities and Dynamic Island experiences using pure JSX, no Swift or native code required.

Nicolas Gallagher (Meta) explains how React Strict DOM evolved from React Native Web, providing a shared syntax that compiles to native or web with zero overhead.

Seth Webster, Executive Director of the React Foundation, details its new governance model, Meta's role, and how partners like Callstack and Microsoft will ensure stability and scale.

Tanner Linsley breaks down TanStack’s evolution-from React Query to Start, and why client-first React apps still matter in today’s full-stack landscape.

CRA is now deprecated, so we explore other options for starting web React projects, going through Vite, TanStack Router, Parcel, and Rsbuild to check the developer experience.

Let's take a deep dive into the long-awaited State of React survey from 2024; brace yourselves for a two-hour ride.

Learn how React 19's new features enhance SEO, page performance, and custom elements support for better, faster web applications.

Discover React 19's key updates, including improved `ref` usage, error reporting, and context consumption in part 2 of this practical developer guide.

Explore the key features of React 19 beta, focusing on new hooks that enhance async handling, state management, and form submissions.

React Server Components (RSC) are still work in progress, but now it's the best time to explore these core concepts of future React. Find out why and how!

Learn how React Native AI uses a unified provider model to switch between cloud and on-device LLMs without rewriting application logic, enabling reliable AI experiences online and offline.

Learn how on-device models in React Native can call tools, interact with external APIs, and return structured outputs you can use directly in application logic.

Learn how to run third-party on-device LLMs in React Native using MLC LLM. Choose your models, run them efficiently across platforms, and keep a unified JavaScript API with React Native AI.

Learn how to use Apple’s built-in Foundation Models in React Native apps, reduce memory usage, and enable fast, fully on-device AI with React Native AI Apple.

Learn why on-device AI matters for React Native apps, how local LLMs behave offline, and what problems React Native AI is designed to solve from day one.

Learn how to implement a React Native TurboModule on Android, from the TypeScript spec and Codegen to the Kotlin implementation and package registration.

Learn how JavaScript, native module, background, and main threads interact in React Native TurboModules, and how to use GCD queues to run async work safely in Swift.

Learn how to expose typed, immutable constants from a Swift TurboModule using Codegen, and get full end-to-end type safety between native and JavaScript.

Learn how to emit native events from a Swift TurboModule and subscribe to them in JavaScript, including proper memory management and Codegen integration.

Learn how to build a fully working TurboModule in Swift, integrate it with Codegen, and bridge it through Objective‑C inside an Expo app.