typeahead directive angular es6

<typeahead-search>

function typeaheadSearch() {
	'ngInject';
	return {
		restrict: 'AE',
		scope: {
			items: '=',
			onInput: '&',
			getQuestion: '&',
			getQuestionsSet: '&',
			loading: '=',
		},
		link: function(scope, elem, attrs) {
			scope.current = 0;
			// showing which item is active
			scope.$watch('items',function () {
				if(!scope.items){
					return;
				}
				if(Object.keys(scope.items).length){
					scope.noResults = false;
					
					const firstRes = scope.items[Object.keys(scope.items)[0]];
					scope.selectedItem = Object.keys(firstRes)[0]; // this is id
				} else {
					scope.noResults = true;
				}
			});
			scope.onQuestionSelection = function(selectedQuestion) {
			 	scope.selected = true;
				scope.getQuestion(selectedQuestion);
				scope.reset();
				
			};
			
			scope.onCategorySelection = function(questions) {
				scope.selected = true;
				scope.getQuestionsSet(questions);
				scope.reset();
				
			};
			scope.reset = function () {
				//scope.current = 0;
				scope.model = '';
				scope.selected = true; // hides the list initially
				console.log('reset search');
			};
			scope.select = function () {
				//console.log(scope.items)
				if (scope.items) {
					scope.onQuestionSelection({qId: scope.selectedItem});
					scope.reset();
				}
			};
			
			elem.bind('keydown', function (evt) {
				if ( scope.items == undefined ) {
					return;
				}
		
    
				if (evt.which === 13 || evt.which === 9) { // 13- enter key
					console.log('pressed Enter');
					scope.$apply(function () {
						scope.select();
					});
				} else if (evt.which === 27) { // escape key
					evt.stopPropagation();
					scope.$apply(function () {
						scope.reset();
					});
					scope.$digest();
				}
			});
			
		},
		templateUrl: 'directives/typeaheadSearch/typeaheadSearch.html'
	}
}

export default {
	name: 'typeaheadSearch',
	fn: typeaheadSearch
}