What are the best practices for using types in React?

What are the best practices for using types in React?

When using types in React, it's important to leverage TypeScript for type safety. This includes defining props and state types, using interfaces, and ensuring components are typed correctly.

Can you give me an example of typing props in a functional component?

Sure! Here's a simple example:

interface MyComponentProps {
  title: string;
  isActive: boolean;
}

const MyComponent: React.FC<MyComponentProps> = ({ title, isActive }) => {
  return <h1 className={isActive ? 'active' : ''}>{title}</h1>;
};

What about using types with context in React?

When using context, you can define a context type and use it with the createContext function. For example:

interface AuthContextType {
  user: User | null;
  login: (user: User) => void;
  logout: () => void;
}

const AuthContext = createContext<AuthContextType | undefined>(undefined);

Are there any common mistakes to avoid when using types in React?

Yes, some common mistakes include not defining types for props, using any too liberally, and not leveraging union types for better type safety.