node.js - writeFile not woking in exceljs -

i using exceljs , try write value in cell not working. workbook.xlsx.readfile(filename) working workbook.xlsx.writefile(filename) won't.

here code:-

var excel = require('exceljs'); var fs = require('fs') module.exports.summary = function(req, res, next) { try {     var filename = process.cwd() + '/template/report/summary.xlsx';     var workbook = new excel.workbook();     workbook.xlsx.writefile(filename)         .then(function() {             var worksheet = workbook.getworksheet(1);             console.log('worksheet',worksheet);             var row = worksheet.getrow(5);             row.getcell('c').value = new date();             row.commit();             worksheet.commit();              workbook.commit().then(function() {                 console.log('xls file written.');             });             res.json({ msg: done })         });   } catch (e) {     next(e);  } } 

try code, hope you

//creating new workbook  var workbook = new excel.workbook();  //creating sheet particular workbook var sheetname = 'sheet1'; var sheet = workbook.addworksheet(sheetname);  //header must in below format sheet.columns = [{key:"name", header:"name}, {key: "age", header: "age"}];  //data must below, key of data must match header. var data = [{name:"kalai", age: 24}, {name:"vignesh", age:24}];  //adding each in sheet for(i in data){   sheet.addrow(data[i]); }  //finally creating xlsx file var filename = "sample.xlsx"; workbook.xlsx.writefile(filename).then(function() {                 callback(null);             });