TypeScript Best Practices for React

TypeScript has become the standard for modern React development, offering powerful type safety and enhanced developer experience. Let's explore the best practices that will elevate your React applications.

Component Typing Strategies

Props Interface Definition

Always define clear interfaces for your component props:

interface ButtonProps {
  variant: 'primary' | 'secondary' | 'ghost';
  size?: 'sm' | 'md' | 'lg';
  children: React.ReactNode;
  onClick?: () => void;
  disabled?: boolean;
}

export const Button: React.FC = ({
  variant,
  size = 'md',
  children,
  onClick,
  disabled = false
}) => {
  return (
    
      {children}
    
  );
};

Advanced Patterns

Generic Components

Create reusable components with generics:

interface ListProps {
  items: T[];
  renderItem: (item: T) => React.ReactNode;
  keyExtractor: (item: T) => string;
}

function List({ items, renderItem, keyExtractor }: ListProps) {
  return (
    
      {items.map((item) => (
        
          {renderItem(item)}
        
      ))}
    
  );
}

These patterns will significantly improve your code quality and development experience!