React: react-gateway context workaround (https://github.com/cloudflare/react-gateway/issues/4)

index.js

class PassContext extends React.Component {
  getChildContext() {
    return {
      dragDropManager: this.props.dragDropManager
    };
  }

  render() {
    return this.props.children;
  }
}

PassContext.childContextTypes = {
  dragDropManager: PropTypes.any
}

function X() {
  return (
    <Gateway into="modal">
      <PassContext dragDropManager={this.context.dragDropManager}>
        <Modal2>...</Modal2>
      </PassContext>
    </Gateway>
  );
}

X.contextTypes = {
  dragDropManager: PropTypes.any
}