cool-modal.js

import Modal from 'some-react-modal'

export class CoolModal extends React.Component {
  render() {
    const { title, size, onExit, children } = this.props;
    const width = size === 'small' ? '360px' : '600px';
    <Modal
      onExit={onExit}
      enableKeys={true}
      closeOnOutsideClick={true}>
      <div style={{width}}>
        <h1>{title}</h1>
        {children}
      </div>
    </Modal>
  }
}