What are type checkers in React?

What are type checkers in React?

Type checkers in React are tools that help ensure the types of props and state are correct, improving code quality.

Can you give me an example of how to use PropTypes?

Sure! You can use PropTypes by importing it and defining the expected types for your component's props like this:

import PropTypes from 'prop-types';

const MyComponent = ({ name, age }) => {
    return <div>{name} is {age} years old.</div>;
};

MyComponent.propTypes = {
    name: PropTypes.string.isRequired,
    age: PropTypes.number
};

What about TypeScript? Is it better than PropTypes?

TypeScript offers static type checking at compile time, which can catch errors earlier than PropTypes, which checks at runtime. Many developers prefer TypeScript for larger applications.

Are there any performance implications of using type checkers?

Generally, type checkers like PropTypes have minimal performance impact, but TypeScript can improve performance by catching errors early, leading to cleaner code.