text: import React, { PureComponent } from 'react';
  import PropTypes from 'prop-types';
  
  import CellShape from './CellShape';
  
  class Row extends PureComponent {
    render() {
      return <tr>
        <td className="cell cell-number">{this.props.row}</td>
        {this.props.children}
      </tr>;
    }
  }
  
  Row.propTypes = {
    row: PropTypes.number.isRequired,
    cells: PropTypes.arrayOf(PropTypes.shape(CellShape)).isRequired,
  };
  
  export default Row;
  