text: import React from "react";
  import PropTypes from "prop-types";
  import { colSpan } from "../support/columns";
  
  const HeaderRow = ({ label }) => (
    <tr>
      <th colSpan={colSpan}>{label}</th>
    </tr>
  );
  
  HeaderRow.propTypes = {
    label: PropTypes.number.isRequired
  };
  
  export default HeaderRow;
  