React Hooks Composition Patterns

Overview

Advanced patterns for composing React hooks to create maintainable, performant, and type-safe custom hooks. Covers SWR integration, debounced search, memoized contexts, and state machine patterns.

Key Concepts:

• Conditional SWR fetching with null keys
• Debounced state with dual loading indicators
• Memoized context providers to prevent re-renders
• State machine pattern for predictable UI states
• Pure helper functions for testability

Pattern 1: SWR Hook Composition with Conditional Fetching

The Pattern

Compose SWR with conditional logic, data transformation, and pure helper functions.