What are some common mistakes with PropTypes in React?

What are some common mistakes with PropTypes in React?

Some common mistakes include not validating props at all, using the wrong data type, and not providing default props.

Can you give me an example of using PropTypes correctly?

Sure! Here's a simple example:

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
};

MyComponent.defaultProps = {
    age: 18
};

What happens if I forget to use PropTypes?

If you forget to use PropTypes, you won't get any warnings about incorrect prop types during development, which can lead to bugs.

Are there alternatives to PropTypes?

Yes, alternatives include TypeScript for static type checking or libraries like Flow for type validation.