Rules of React – React
Just as different programming languages have their own ways of expressing concepts, React has its own idioms — or rules — for how to express patterns in a way that is easy to understand and yields high-quality applications. This section describes the rules you need to follow to write idiomatic React code. Writing idiomatic React code can help you write well organized, safe, and composable applicat
React Compiler – React
This page will give you an introduction to the new experimental React Compiler and how to try it out successfully. These docs are still a work in progress. More documentation is available in the React Compiler Working Group repo, and will be upstreamed into these docs when they are more stable. React Compiler is a new experimental compiler that we’ve open sourced to get early feedback from the com
React 19 RC – React
In our React 19 RC Upgrade Guide, we shared step-by-step instructions for upgrading your app to React 19. In this post, we’ll give an overview of the new features in React 19, and how you can adopt them. What’s new in React 19 Improvements in React 19 How to upgrade For a list of breaking changes, see the Upgrade Guide. What’s new in React 19 Actions A common use case in React apps is to perform a
React Labs: What We've Been Working On – February 2024 – React
In React Labs posts, we write about projects in active research and development. We’ve made significant progress since our last update, and we’d like to share our progress. React Conf 2024 is scheduled for May 15–16 in Henderson, Nevada! If you’re interested in attending React Conf in person, you can sign up for the ticket lottery until February 28th. For more info on tickets, free streaming, spon
React Canaries: Enabling Incremental Feature Rollout Outside Meta – React
React Canaries: Enabling Incremental Feature Rollout Outside Meta We’d like to offer the React community an option to adopt individual new features as soon as their design is close to final, before they’re released in a stable version—similar to how Meta has long used bleeding-edge versions of React internally. We are introducing a new officially supported Canary release channel. It lets curated s
React Labs: What We've Been Working On – June 2022 – React
React 18 was years in the making, and with it brought valuable lessons for the React team. Its release was the result of many years of research and exploring many paths. Some of those paths were successful; many more were dead-ends that led to new insights. One lesson we’ve learned is that it’s frustrating for the community to wait for new features without having insight into these paths that we’r
React v18.0 – React
For React Native users, React 18 will ship in React Native with the New React Native Architecture. For more information, see the React Conf keynote here. What is Concurrent React? The most important addition in React 18 is something we hope you never have to think about: concurrency. We think this is largely true for application developers, though the story may be a bit more complicated for librar
How to Upgrade to React 18 – React
As we shared in the release post, React 18 introduces features powered by our new concurrent renderer, with a gradual adoption strategy for existing applications. In this post, we will guide you through the steps for upgrading to React 18. Please report any issues you encounter while upgrading to React 18. For React Native users, React 18 will ship in a future version of React Native. This is beca
The Plan for React 18 – React
The React team is excited to share a few updates: We’ve started work on the React 18 release, which will be our next major version. We’ve created a Working Group to prepare the community for gradual adoption of new features in React 18. We’ve published a React 18 Alpha so that library authors can try it and provide feedback. These updates are primarily aimed at maintainers of third-party libraries
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