some code cleaning
diff --git a/ambari-metrics-grafana/ambari-metrics/query_ctrl.js b/ambari-metrics-grafana/ambari-metrics/query_ctrl.js
index 17bcfbf..b466167 100644
--- a/ambari-metrics-grafana/ambari-metrics/query_ctrl.js
+++ b/ambari-metrics-grafana/ambari-metrics/query_ctrl.js
@@ -39,8 +39,6 @@
     /** @ngInject **/
     function AmbariMetricsQueryCtrl($scope, $injector) {
         var _this = _super.call(this, $scope, $injector) || this;
-        var self = _this;
-        var lodash = lodash_1["default"];
         _this.errors = _this.validateTarget(_this.target);
         _this.aggregators = ['none', 'avg', 'sum', 'min', 'max'];
         _this.precisions = ['default', 'seconds', 'minutes', 'hours', 'days'];
@@ -94,12 +92,12 @@
         };
         _this.suggestMetrics = function (query, callback) {
             _this.datasource.suggestMetrics(query, _this.target.app)
-                .then(self.getTextValues)
+                .then(_this.getTextValues)
                 .then(callback);
         };
         _this.suggestTagKeys = function (query, callback) {
             _this.datasource.metricFindQuery('tag_names(' + _this.target.metric + ')')
-                .then(self.getTextValues)
+                .then(_this.getTextValues)
                 .then(callback);
         };
         _this.suggestTagValues = function (query, callback) {
@@ -109,7 +107,6 @@
         };
         _this.getTextValues = function (metricFindResult) {
             return metricFindResult.map(function (value) { return value.text; });
-            //return lodash.map(metricFindResult, function(value) { return value.text; });
         };
         return _this;
     }
@@ -117,7 +114,7 @@
         this.target.errors = this.validateTarget(this.target);
         this.refresh();
     };
-    
+    ;
     AmbariMetricsQueryCtrl.prototype.addTag = function () {
         if (!this.addTagMode) {
             this.addTagMode = true;
diff --git a/ambari-metrics-grafana/ambari-metrics/query_ctrl.ts b/ambari-metrics-grafana/ambari-metrics/query_ctrl.ts
index 13e24f9..cbc8dc0 100644
--- a/ambari-metrics-grafana/ambari-metrics/query_ctrl.ts
+++ b/ambari-metrics-grafana/ambari-metrics/query_ctrl.ts
@@ -41,8 +41,6 @@
     /** @ngInject **/
     constructor($scope, $injector) {
         super($scope, $injector);
-        var self = this;
-        var lodash = _;
         this.errors = this.validateTarget(this.target);
         this.aggregators = ['none','avg', 'sum', 'min', 'max'];
         this.precisions = ['default','seconds', 'minutes', 'hours', 'days'];
@@ -102,13 +100,13 @@
 
         this.suggestMetrics = (query, callback) => {
             this.datasource.suggestMetrics(query, this.target.app)
-                .then(self.getTextValues)
+                .then(this.getTextValues)
                 .then(callback);
         };
 
         this.suggestTagKeys = (query, callback) => {
             this.datasource.metricFindQuery('tag_names(' + this.target.metric + ')')
-                .then(self.getTextValues)
+                .then(this.getTextValues)
                 .then(callback);
         };
 
@@ -172,3 +170,4 @@
     }
 }
 
+