Add custom text to the end of CSV file in NodeJS

Question

How to add custom text to the end of .csv file in NodeJS? Currently, I parse csv file and do some validation against predefined parameters (separator, columns number etc.) and after that I have to add custom line at the end of file.

Example:

Col1 Col2 Col3 Col4
Row1 Row1 Row1 Row1
Row2 Row2 Row2 Row2
Row3 Row3 Row3 Row3

And at the end, there should be custom line with line ending character.

Ex:

this is the end of file\n

eol · Accepted Answer · 2017-06-16 07:59:21Z

2

You can simply use appendFile:

Asynchronously:

const fs = require('fs');

fs.appendFile('yourfile.csv', 'this is the end of file\n', function (err) {
  if (err) throw err;
  console.log('Saved!');
});

Synchronously:

const fs = require('fs');

fs.appendFileSync('yourfile.csv', 'this is the end of file\n');

answered Jun 16, 2017 at 7:59

eol

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