React API Overview

The React API is organized around components, hooks, and built-in utilities.

Official docs

Full reference: react.dev/reference/react

Core Exports

Export	Purpose
createElement	Low-level element creation
Component	Class component base
Fragment	Group elements without extra DOM nodes
StrictMode	Development-time checks
Suspense	Declarative loading boundaries

React 19 Highlights

• Improved Server Components integration
• Actions and form handling with useActionState
• Document metadata support in components
• Ref as a prop (no more forwardRef in many cases)

Sections

• Hooks — useState, useEffect, and more
• Components — <Fragment>, <Suspense>, etc.
• Built-in APIs — cache, memo, lazy

Upstream Links

• react — API Reference
• react-dom — API Reference