React Patterns

What it does

This skill, "React Patterns," provides guidance and principles for building production-ready React applications. It covers a range of topics from component design and hook patterns to state management selection and emerging features in React 19. The skill aims to help developers structure their code effectively and choose appropriate techniques for common UI development challenges.

When to use it

• When designing reusable UI components and needing guidance on component types (Server, Client, Presentational, Container).
• When implementing complex form logic or repetitive data fetching patterns and considering custom hooks like useLocalStorage, useDebounce, or useFetch.
• When deciding between different state management solutions (useState, useReducer, Context, React Query, Zustand, Redux Toolkit) based on application complexity.
• To understand and leverage new features in React 19, such as the useActionState and useOptimistic hooks.

Key capabilities

• Component Design Principles: Guidelines for component types, responsibilities, and composition.
• Hook Patterns: Identifying when to extract custom hooks and adhering to hook rules (top-level only, consistent order).
• State Management Selection: Guidance on choosing appropriate state management solutions based on complexity.
• React 19 Features: Information about new hooks like useActionState and useOptimistic, as well as compiler benefits including automatic memoization.
• Composition Patterns: Explanations of compound components, render props vs. hooks, and higher-order components.

Example prompts

• "What are the different types of React components?"
• "When should I extract a custom hook in my React application?"
• "How do I choose between Context and Redux Toolkit for state management?"
• "Explain how compound components work in React."

Tips & gotchas

• This skill focuses on architectural patterns and best practices, not the fundamentals of React syntax. A basic understanding of React is assumed.
• The "React 19 Patterns" section describes features that may be experimental or subject to change as React evolves.