text: export default function (props) {
    var rie = 'Invariant Violation: '
    if (!props.height) {
      throw new Error(
        rie +
          'height must be provided.'
      )
    }
  
    if (!(typeof props.rowHeight === 'number' || typeof props.rowHeight === 'function')) {
      throw new Error(
        rie +
          'You must provide either a number or a function as the rowHeight.'
      )
    }
  }
  