prop types react

HTML

<script src="https://unpkg.com/react@16/umd/react.development.js"></script>
<script src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
<script src="            https://unpkg.com/prop-types@15.6.0/prop-types.js                                 "></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.5/css/bootstrap.min.css">
<div id="container">
    <!-- This element's contents will be replaced with your component. -->
</div>

Babel + JSX

const propTypes = {
	customProp: function(props, propName, componentName) {
    if ( !("myPropA" in props) && !("myPropB" in props) ) {
    	return new Error(
        "Invalid prop"
      );
    }
  }
}

class Hello extends React.Component {
  render() {
    return (<div>Hello {this.props.name}!</div>)
  }
}

Hello.propTypes = propTypes;

ReactDOM.render(
  <Hello name="World" />,
  document.getElementById('container')
);