old_contents: import { PropTypes } from 'react';
  
  const CardPropTypes = {
    id: PropTypes.number,
    name: PropTypes.string,
    type: PropTypes.string,
    colour: PropTypes.string,
    manaCost: PropTypes.string,
    numberCopies: PropTypes.number,
    rarity: PropTypes.string,
  };
  
  export {
    CardPropTypes,
  };
  
new_contents: import { PropTypes } from 'react';
  
  const CardPropTypes = {
    id: PropTypes.number,
    name: PropTypes.string,
    types: PropTypes.arrayOf(PropTypes.string),
    colour: PropTypes.string,
    manaCost: PropTypes.string,
    numberCopies: PropTypes.number,
    rarity: PropTypes.string,
  };
  
  export {
    CardPropTypes,
  };
  
subject: Change Card proptypes accordingly to backend data