Creating a xlsx file using the package xlsx

create-xlsx.js

// More at: https://github.com/SheetJS/js-xlsx/blob/master/demos/server/express.js

import XLSX from 'xlsx';

// create a new workbook
const workbook = XLSX.utils.book_new();

// create a new worksheet
const worksheet = XSLX.utils.json_to_sheet([{ a: 1, b: false }]);

// add the worksheet to the workbook
XLSX.utils.book_append_sheet(workbook, worksheet, 'Teretete');

// write it down
XLSX.writeFile(workbook, 'out.xlsx');