Thank you. The code below works perfectly

<?php

  $language = $GLOBALS['language']->language;

  $language_map = array(
    'uk-ua' => 'uk',
    'fr-fr' => 'fr',
    'pl-pl' => 'pl',
    'de-at' => 'de',
  );

  $script_language = isset($language_map[$language]) ? $language_map[$language] : $language;

  $script_url = "https://abomus.co.il/js/{$script_language}-informer-widget.js";

?>