react.dev
The React team shares their recent developments, including the production-level React Compiler, the development of the Actions framework, and the introduction of React Canaries for community feedback on new features. The team also highlights upcoming events like React Conf 2024, emphasizing their focus on enhancing developer experience across environments.
Main Points
React Compiler advancements
React Compiler optimizes code by adhering to JavaScript and React’s specific rules, aiming to minimize unnecessary re-renders based on state changes.
Development of the Actions framework
Actions framework simplifies form and data handling in both client and server environments, supporting async operations and optimistic UI updates.
Introduction of React Canaries for community feedback
Canaries model allows earlier exposure to new features through community feedback, aiming for a comprehensive set of features across environments before stable release.
Insights
React Compiler is no longer a research project and now powers instagram.com in production.
The compiler is focused on optimizing code by respecting both the rules of JavaScript and the specific ‘rules of React’ to safely re-render parts of the UI when state changes. The goal is for the compiler to work on as much code as possible, with testing against Meta’s large and varied codebase.
Actions allow asynchronous or synchronous operations, defining standard JavaScript or using the 'use server' directive.
Actions aim to simplify client-server data communication by handling data submission lifecycle, supporting async functions and optimistic UI state updates. They are designed to work across environments and are available in the Canary channel for the next React release.
New features like React Server Components, Asset Loading, Document Metadata, and Actions landed in React Canary.
React Canaries approach allows feedback from the community on feature designs before stable release, aiming to build a cohesive set of features that work across platforms.