React 19

React 19 (stable since Dec 2024) simplifies async operations, improves SSR, and enhances DX with Actions, Server Components, and new hooks.

When to Use

• Building React 19 applications
• Async form handling with automatic pending/error states
• Server Components for SSR
• Optimistic UI updates
• Migrating from React 18
• Server Actions for full-stack forms

Installation

npm install react@19.2.1 react-dom@19.2.1
npm install --save-dev @types/react@19.0.0 @types/react-dom@19.0.0