const Excel = require('exceljs');

(async () => {
  const workbook = new Excel.stream.xlsx.WorkbookWriter({
    filename: 'ohno.xlsx',
    useSharedStrings: true
  });

  const worksheet = workbook.addWorksheet('myWorksheet');
  const sheetRow = worksheet.addRow(['Hello']);
  sheetRow.commit();

  worksheet.commit();
  await workbook.commit();
})();