{

    function translateFilter($injector: ng.auto.IInjectorService) {
        "ngInject";

        let pipTranslate: pip.services.ITranslateService = $injector.has('pipTranslate') 
            ? <pip.services.ITranslateService>$injector.get('pipTranslate') : null;

        return function (key: string) {
            return pipTranslate ? pipTranslate.translate(key) || key : key;
        }
    }

    angular
        .module('pipNav.Translate', [])
        .filter('translate', translateFilter);

}