PropTypes.objectOf(Object), code example

Example 1: how to make proptypes either or

size: PropTypes.oneOfType([
  PropTypes.string,
  PropTypes.number
]),

Example 2: how to make proptypes either or

size: PropTypes.oneOfType([
    PropTypes.number,
    PropTypes.oneOf([ 'SMALL', 'LARGE' ]),
]),