title: How to avoid overwriting the previous data using excel4node?
body: <p>I have some data and I am storing it in excel csv, using npm package excel4node. But as I run the script a new instance of workbook is created. If I am running the script multiple times I want to keep on appending the new data in the sheet rather than creating a new instance of the workbook. </p>
  
  <pre><code>var workbook = new excel.Workbook();
  var worksheet = workbook.addWorksheet("sheet1");
  
  for (var i = 1; i &lt; allTexts.length + 1; i++) {
  
    worksheet.cell(i + 1, 1).string(allTexts[count]);
    worksheet.cell(i + 1, 3).string(allnumbers[count]);
    count++;
  }
  
  workbook.write("sample.csv");
  </code></pre>