What’s New in React Native 0.83, React 19.2, New DevTools features

React Native 0.83 brings a host of new features and improvements, including integration with React 19.2 APIs like use and useEffectEvent. This update enhances developer experience with better state management and new ways to handle asynchronous data and events in React Native apps.

I also covers new DevTools capabilities such as network inspection and performance tracing, helping you debug and optimize your apps more effectively. Whether you use Expo or vanilla React Native, you’ll learn how to try out these features and why they matter for your projects in 2026.

What's inside

• How to test React Native 0.83 with Expo and Canary templates
• Introduction to the new React 19.2 use API for handling promises
• Using the new Activity API to manage component visibility and state
• Overview of the useEffectEvent API for event subscriptions without effect dependencies
• React Native DevTools network inspector for fetch, XMLHttpRequest, and images
• Performance tracing in DevTools to profile JavaScript execution and network events
• Security note on upgrading dependencies related to React server components
• Recommendations for adopting new APIs and DevTools in your projects

How to test React Native 0.83 with Expo and Canary templates

If you want to try React Native 0.83, you can upgrade your project directly if you’re not using Expo. For Expo users, I show how to test 0.83 by creating a new project with the Expo Canary template using:

• create-expo-app with the --template blank-typescript and --add canary flags

This sets up a minimal project with SDK 55 and React Native 0.83, including React 19.2. The template is simple, with only essential dependencies, making it ideal for testing new features without extra complexity.

Introduction to the new React 19.2 use API for handling promises

React 19.2 introduces the use API, which lets you pass a promise directly and get the resolved data synchronously in your component. I demos a Pokedex app fetching Pokémon data with a 2-second delay to show a skeleton loading state.

Key points:

• use accepts a promise and returns the resolved data or suspends rendering until ready
• Wrap your component in React’s Suspense to show a fallback UI (like a skeleton) while loading
• This simplifies asynchronous data fetching by eliminating manual loading state management
• You can pass context along with the promise for more flexible data handling

This API makes it easier to integrate async data in React Native with clean, declarative code.

Using the new Activity API to manage component visibility and state

The Activity API from React 19.2 helps manage component visibility without unmounting, preserving state when hidden. I explain how to use Activity with modes visible or hidden to control which tab or screen is active.

Highlights:

• Instead of conditionally rendering components, wrap them in Activity components
• Set mode="visible" for the active tab and mode="hidden" for inactive ones
• This avoids layout jumps and state resets common with conditional rendering
• It’s recommended to adopt Activity in new projects for smoother UI transitions and better performance

This API improves user experience by keeping hidden components alive and ready.

Overview of the useEffectEvent API for event subscriptions without effect dependencies

useEffectEvent is a new React 19.2 API designed to handle event subscriptions inside effects without causing unnecessary re-renders or effect re-executions.

Key details:

• It abstracts event handlers so you don’t need to add many dependencies to your useEffect
• Useful for subscriptions like websockets or external event listeners
• Helps avoid bugs and performance issues caused by effect dependency arrays
• I show an example where useEffectEvent manages a websocket connection state update

This API simplifies event-driven logic in React Native apps.

React Native DevTools network inspector for fetch, XMLHttpRequest, and images

React Native 0.83 adds a network inspector tab in DevTools, allowing you to monitor network requests directly inside your debugging environment.

Features:

• Supports fetch, XMLHttpRequest, and image requests
• You can filter requests by type (fetch, media, all)
• Shows request method, endpoint, payload, and response preview
• Expo users continue to see a separate Expo network panel with some reduced features
• This makes debugging network calls easier without external tools

I demos refreshing the app and viewing Pokémon API requests in the network inspector.

Performance tracing in DevTools to profile JavaScript execution and network events

The new performance tab in React Native DevTools lets you record and analyze app performance, including JavaScript execution, network events, and custom user timings.

Details:

• Start recording with the record button or command + E
• View a timeline of operations to identify slow or expensive code
• Helps diagnose performance bottlenecks in your React Native app
• Supports web performance APIs for consistent profiling across platforms
• Encouraged to integrate performance tracing into your daily workflow

I show a quick recording session and explains how this can help optimize your app.

Security note on upgrading dependencies related to React server components

A critical security vulnerability was recently discovered in React server components. While it doesn’t directly affect React Native, if you use experimental React server components or functions, you must upgrade related dependencies immediately.

Recommendations:

• Upgrade expo-router and expo if you use experimental React server features
• Keep your dependencies up to date to avoid security risks
• This is an important heads-up for projects using cutting-edge React features

Recommendations for adopting new APIs and DevTools in your projects

I recommend adopting the new React 19.2 APIs like Activity and useEffectEvent in your React Native 0.83 projects for better state management and event handling.

Additional advice:

• Use Activity to preserve component state and avoid layout jumps
• Wrap async data fetching with use and Suspense for clean loading states
• Leverage the new DevTools network and performance panels to debug and optimize
• Test these features early using Expo Canary templates or direct upgrades

These improvements will help you build more robust and performant React Native apps in 2026.

Resources

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Master React Native fundamentals and advanced topics including integrations, routing, and CI/CD.

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