Track every VWO experiment only once (#588)

* Track every VWO experiment only once

* Update HISTORY.md

* Bump version to 2.4.4

Author: Gaurav Nanda

integrations/visual-website-optimizer/HISTORY.md

@@ -1,3 +1,8 @@
+2.4.4 / 2021-04-23
+==================
+
+  * Fix for VWO tracking, Send track call once per experiment.
+
 2.4.2 / 2021-02-09
 ==================
 

integrations/visual-website-optimizer/lib/index.js

@@ -116,6 +116,7 @@ VWO.prototype.roots = function() {
   var analytics = this.analytics;
   var self = this;
   var identifyCalled = false;
+  var experimentsTracked = {};
   rootExperiments(function(err, data) {
     each(data, function(experimentId, variationName) {
       var uuid = window.VWO.data.vin.uuid;
@@ -131,9 +132,12 @@ VWO.prototype.roots = function() {
         analytics.identify({vwoUserId: uuid});
         identifyCalled = true;
       }
-      analytics.track('Experiment Viewed', props, {
-        context: { integration: integrationContext }
-      });
+      if (!experimentsTracked[experimentId]) {
+        analytics.track('Experiment Viewed', props, {
+          context: { integration: integrationContext }
+        });
+        experimentsTracked[experimentId] = true;
+      }
     });
   }, this.options.trackOnlyABExperiments);
 };

integrations/visual-website-optimizer/package.json

@@ -1,7 +1,7 @@
 {
   "name": "@segment/analytics.js-integration-visual-website-optimizer",
   "description": "The Visual Website Optimizer analytics.js integration.",
-  "version": "2.4.3",
+  "version": "2.4.4",
   "keywords": [
     "analytics.js",
     "analytics.js-integration",