I'm trying to write data into an Excel file using ExcelJS library. I was successfully able to create worksheet and add column data.

However, while trying to implement addRow() or addRows() method, the data is not added into the Excel worksheet.

Here is the code I tried:

 const ExcelJS = require('exceljs');

 var workbook = new ExcelJS.Workbook();

 var worksheet = workbook.addWorksheet('Payment Data');

 worksheet.columns = reportHeaders; //reportHeaders is an array of header objects

I'm able to see the columns created successfully in the excel sheet. The trouble starts from below, where I'm trying to add data (into rows):

1st method :

  worksheet.addRows(excelData);//excelData is an array of data objects

2nd method:

  for(var rowItem in excelData){

  worksheet.addRow(excelData[rowItem]);}

However, it seems either of these methods aren't working for me.
Finally, the file is saved:

  workbook.xlsx.writeFile('PaymentData.xlsx')

Is there anything I'm missing? Any help will be appreciated.