Using the Promise library + Fast-CSV to read/write CSV files

index.js

var promiseCSV = require('promiseCSV.js');

var path = "in.csv";
var options = { 'headers': true };

promiseCSV(path, options).then(function (records) {
  // do other stuff 
});

promiseCSV.js

var csv = require('fast-csv');
var Promise = require('bluebird');

var promiseCSV = Promise.method(function(path, options) {
  return new Promise(function(resolve, reject) {
    var records = [];
    csv
      .fromPath(path, options)
      .on('data', function(record) {
        records.push(record);
      })
      .on('end', function() {
        resolve(records);
      });
  };
});

module.exports = promiseCSV;