Translate twig date extension (time_diff filter) to Dutch (Nederlands) using array loader in a custom non-symfony application

twig-translated-timediff-array-configuration.php

<?php
// Create translator for date diff
$translator = new Symfony\Component\Translation\Translator('nl_NL');
$translator->addLoader('array', new Symfony\Component\Translation\Loader\ArrayLoader());
$translator->addResource('array', array(
    'diff.ago.second' => 'een seconde geleden|%count% seconden geleden',
    'diff.ago.minute' => 'een minuut geleden|%count% minuten geleden',
    'diff.ago.hour' => 'een uur geleden|%count% uur geleden',
    'diff.ago.day' => 'een dag geleden|%count% dagen geleden',
    'diff.ago.month' => 'een maand geleden|%count% maanden geleden',
    'diff.ago.year' => 'een jaar geleden|%count% jaar geleden',
), 'nl_NL', 'date');

// Add extensions
$view->addExtension(new Twig_Extensions_Extension_Date($translator));

Ah, I think my problem is that I'm using Twig without Symfony. I tried adding in those particular components but it failed, but I haven't tried adding in an older version. I'll give it a shot later. Might just write my own implementation of it though