How do I use PropTypes in my class components?

How do I use PropTypes in my class components?

You can use PropTypes by importing it from the 'prop-types' package and defining the prop types for your class.

Can you show me an example?

Sure! Here's a simple example:

import React from 'react';
import PropTypes from 'prop-types';

class MyComponent extends React.Component {
  render() {
    return <div>{this.props.name}</div>;
  }
}

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

What happens if I don't provide the required prop?

If you don't provide a required prop, React will log a warning in the console during development.

Can I use PropTypes for custom data types?

Yes, you can create custom PropTypes by defining a function that validates the prop value.