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));

Hey @sudofox, just checked and Translator implements TranslatorInterface (see https://github.com/symfony/translation/blob/52f486a707510884450df461b5a6429dd7a67379/Translator.php#L92) so that should be no issue.

The package that is required for the Translator class is symfony/translation. Could you verify if it is installed? If you don't have it you can install it using: composer require symfony/translation.

If you are getting an error about Symfony\Component\Translation\TranslatorInterface then maybe you need a lower version of the translation package (I think <= 3.4) because in higher symfony versions the include path changed to: Symfony\Contracts\Translation\TranslatorInterface.

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