text: import React, { useState } from 'react';
  import PropTypes from 'prop-types';
  
  const CustomDemo = ({ greeting }) => {
    const [count, setCount] = useState(0)
    return (
      <>
        <strong>
          Hey, {greeting}! You clicked {count} times.
        </strong>
  
        <button onClick={() => setCount(count - 1)}>Decrement</button>
        <button onClick={() => setCount(count + 1)}>Increment</button>
      </>
    )
  }
  
  CustomDemo.propTypes = {
    greeting: PropTypes.string,
  }
  
  export default CustomDemo