Learn PREACT with Real Code Examples
Updated Nov 22, 2025
Architecture
Component-based design
Virtual DOM for efficient updates
Hooks and context for state management
Declarative UI rendering
Optional compatibility layer with React ecosystem
Rendering Model
Client-side rendering
Virtual DOM diffing
Efficient state-driven updates
Declarative JSX templates
Optional server-side rendering via preact-render-to-string
Architectural Patterns
Component-based architecture
Hooks & functional components
Class components for lifecycle methods
Context for state sharing
Event-driven updates
Real World Architectures
Mobile-first SPAs
Embedded UI widgets
Interactive dashboards
Progressive web apps
Small to medium web applications
Design Principles
Ultra-lightweight
React-compatible API
Virtual DOM efficiency
Modular & composable
Performance-first mindset
Scalability Guide
Use small, focused components
Lazy-load non-critical components
Use context efficiently
Avoid unnecessary state updates
Split large apps into modules
Migration Guide
Migrate React components to Preact/compat
Replace React imports with Preact aliases
Adjust lifecycle methods if needed
Test compatibility with third-party React libraries
Optimize bundle size