function make_book() {
  const ws = XLSX.utils.aoa_to_sheet(data);
  const wb = XLSX.utils.book_new();
  XLSX.utils.book_append_sheet(wb, ws, 'SheetJS');
  return wb;
}
/* helper to generate the workbook object */
helper to generate the workbook object
helper to generate the workbook object
function make_book() {
  const ws = XLSX.utils.aoa_to_sheet(data);
  const wb = XLSX.utils.book_new();
  XLSX.utils.book_append_sheet(wb, ws, 'SheetJS');
  return wb;
}
function make_book ( ) { const ws = XLSX . utils . aoa_to_sheet ( data ) ; const wb = XLSX . utils . book_new ( ) ; XLSX . utils . book_append_sheet ( wb , ws , 'SheetJS' ) ; return wb ; }
helper to generate the workbook object
helper to generate the workbook object