code: function translateInLanguageFilter(key, locale) {
      for (var _len = arguments.length, args = new Array(_len > 2 ? _len - 2 : 0), _key = 2; _key < _len; _key++) {
        args[_key - 2] = arguments[_key];
      }
  
      return translateInLanguage.apply(void 0, [locale, key].concat(args));
    }
docs: add a filter function to translate in a given locale (i.e. {{ 'something' | translateIn('en') }})