subir archivos csv

cliente.js

script(src='/views/js/jquery.min.js')
  script(src='/js/bootstrap.min.js')
  script(src='/js/cargue.js')
  script(src='/vendor/bootstrap/js/dropdown.js')
block body
  div.page-header
    div.col-sm-11

      div(id="usuario", class="#{usuario}")
      form.form-horizontal
      br
      .control-group
        form.control-group#uploadForm(enctype='multipart/form-data', action='/admin/area/migrar', method='post')
            input(type='file', name='userPhoto')
            br
            input.btn.btn-primary(type='submit', value='Importar', name='submit')
      div#status

      script(type='text/javascript', src='/vendor/jquery/jquery.js')
      script(type='text/javascript', src='/views/js/jquery.form.js')
      script.
        $(document).ready(function() {
        $('#uploadForm').submit(function() {
        if ($("input[name='userPhoto']").val() ==='') {
        toastr.options = {
        closeButton: true,
        debug: false,
        newestOnTop: false,
        progressBar: true,
        positionClass: "toast-top-center" || 'toast-top-right',
        preventDuplicates: false,
        timeOut: "1000",
        onclick:null
        };
        toastr.error("Debe seleccionar un archivo en formato CSV.", "Importante!");  
        }else{
        var formData = new FormData($(this)[0]);
        formData.append("titulo", $("#titulo").val());
        formData.append("usuario", $("#usuario").attr("class"));
        $.ajax({
        url: '/admin/area/migrar',
        type: 'POST',
        data: formData,
        async: true,
        success: function (data) {
        $("#status").html(data);
        $("#uploadForm").hide();
        },
        cache: false,
        contentType: false,
        processData: false
        });
        }
        return false;
        });
        }); 

controller.js

// dependencias
var Converter = require('csvtojson').Converter
var fs = require('fs')
var formidable = require('formidable')

// codigo del controlador
exports.subir = (req, res, modulo) => {
  var form = new formidable.IncomingForm()
  form.parse(req, (err, fields, files) => {
    var csvConverter = new Converter({})
    csvConverter.on('end_parsed', (jsonObj) => {