react - React 19 Best Practices
React 19 performance optimization guidelines for concurrent rendering, Server Components, actions, hooks, and memoization.
Tags
Updated: 2026-09-23Capabilities
Typical Inputs
Typical Outputs
What this skill does
- Write and refactor React components
- Optimize re-render performance and bundle size
- Use React 19 concurrent features
- Set up Server Components and boundaries
- Implement form actions and data fetching
- Configure React Compiler for memoization
- Review React code for anti-patterns
Inputs
- React components
- React code
Outputs
- Optimized React components
- Refactored React code
Requirements
- React 19 or 19.2
- React Compiler v1.0+