React - Use PropTypes to Define the Props You Expect

Tell us what’s happening:
Describe your issue in detail here.

Your code so far

import PropTypes from 'prop-types';
const Items = (props) => {
  return <h1>Current Quantity of Items in Cart: {props.quantity}</h1>
};

// Change code below this line
Items.propTypes={quantity:Proptypes.number.isRequired};
ShoppingCart.propTypes={quantity:Proptypes.number.isRequired};
// Change code above this line

Items.defaultProps = {
  quantity: 0
};

class ShoppingCart extends React.Component {
  constructor(props) {
    super(props);
  }
  render() {
    return <Items />
  }
};

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36

Challenge: React - Use PropTypes to Define the Props You Expect

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