move-prop-types/test/manual/components/Button.js

"Help quickly replace the prop type checker in older react projects to map to prop-types"

import React from 'react';

import PropTypes from 'prop-types';
const Button = ({ label, onClick }) => (
  <button onClick={onClick}>{label}</button>
);

Button.propTypes = {
  label: PropTypes.string.isRequired,
  onClick: PropTypes.func.isRequired
};

export default Button;