@bigfishtv/cockpit/src/components/modal/ModalToolbar.js

import PropTypes from 'prop-types'
import React, { Component } from 'react'
import Icon from '../Icon'

export default class ModalToolbar extends Component {
	static propTypes = {
		onClose: PropTypes.func,
	}

	static defaultProps = {
		onClose: () => console.warn('No onClose prop given to ModalToolbar'),
	}

	render() {
		return (
			<button type="button" className="button button-icon margin-left-xsmall" onClick={this.props.onClose}>
				<Icon name="close" size="18" />
			</button>
		)
	}
}