Table of Contents

  • Component Props

  • State Management

TypeScript Best Practices for React

January 5, 2024

David Rodriguez

Discover essential TypeScript patterns and best practices for building type-safe React applications.

TypeScript
React
JavaScript
Best Practices
Type Safety

TypeScript enhances React development by providing type safety and better developer experience.

Component Props

Always define interfaces for your component props:

typescript
3interface ButtonProps {
4  children: React.ReactNode;
5  onClick: () => void;
6  variant?: 'primary' | 'secondary';
7}
8
9const Button: React.FC<ButtonProps> = ({ children, onClick, variant = 'primary' }) => {
10  return (
11    <button onClick={onClick} className={variant}>
12      {children}
13    </button>
14  );
15};

State Management

Use proper typing for useState:

typescript
3const [user, setUser] = useState<User | null>(null);

These practices help catch errors early and improve code maintainability.