creating a massive CSV with node streams

gistfile1.js

/**
 * Created by toddgeist on 12/28/14.
 */

var faker = require('faker');
var stringify = require('csv-stringify');
var uuid =require('uuid');
var moment = require('moment');
var fs = require('fs');
var Readable = require('stream').Readable;

var start = moment();
var birthDateStart = moment().subtract(100, 'years');
var birthDateEnd = moment().subtract(18, 'years');
var rows = 10000000;
var fileName = 'data.csv';


var columns = [
    'uuid',
    'firstName',
    'lastName',
    'email',
    'mobilePhone',
    'workPhone',
    'address',
    'city',
    'state',
    'postalCode',
    'birthDate',
    'company',
//    'slogan',
//    'notes',
    'userName'
].join(',') + '\n';

var person = function(){
    return [
        uuid.v4(),
        faker.name.firstName(),
        faker.name.lastName(),
        faker.internet.email(),
        faker.phone.phoneNumber(),
        faker.phone.phoneNumber(),
        faker.address.streetAddress(),
        faker.address.city(),
        faker.address.state(),
        faker.address.zipCode(),
        moment( faker.date.between(birthDateStart, birthDateEnd)).format('M/d/YYYY'),
        faker.company.companyName(),
//        faker.company.catchPhrase(),
      //  faker.lorem.paragraphs(),
        faker.internet.userName()
    ].join(',') + '\n';
}

rs = new Readable;
var writable = fs.createWriteStream(__dirname + '/data.csv');



var i = 0;
rs._read = function(){
    i++;
    if( i===1) {
        rs.push(columns)
    }else if(i > rows){
        rs.push(null)
    }else{
        rs.push(person())
    }
};


rs.pipe(writable);