npm.1.2.1|a.1.3.1|b.207

- Add support for Beacon API
- Minor overall optimizations

lib/analytics.js

@@ -3,7 +3,7 @@ module.exports = (function () {
     var self     = this;
     this.sid     = sid;
     this.DNT     = !!parseInt(navigator.doNotTrack || 0);
-    this.version = 206;
+    this.version = 207;
     this.sending = false;
     this.loc     = location || window.location || document.location;
     this.current = '';
@@ -41,13 +41,13 @@ module.exports = (function () {
       /* Listen for Global Errors */
       var _onerror   = window.onerror;
       window.onerror = function (_msg, _url, _line, _column) {
+        var url = _url || '';
         var msg = _msg || 'N/A';
-        var url = (_url || '') + ' at ' + self.loc.href;
         var line = _line || '0';
         var column = _column || '0';
 
         if (!!~url.indexOf(self.loc.origin)) {
-          self.pushEvent('[Global Error]', 'Error: ' + msg + '. File: ' + url.replace(self.loc.origin, '').replace(self.loc.origin, '') + ' At: ' + line + ':' + column);
+          self.pushEvent('[Global Error]', 'Error: ' + msg + '. File: ' + url.replace(self.loc.origin, '') + ' at ' + self.loc.href + ':' + line + ':' + column);
         }
         if (_onerror) {
           _onerror.apply(this, arguments);
@@ -122,7 +122,6 @@ module.exports = (function () {
 
         setTimeout(function () {
           self.current = self.loc.href;
-          var imageLoader;
 
           if (!~query.indexOf('?3=')) {
             query  = ('?6=' + self._euc(self.loc.href.trim().substring(0, 1024)) + query);
@@ -132,17 +131,23 @@ module.exports = (function () {
             }
           }
 
-          if (window.Image === undefined) {
-            imageLoader = document.createElement('img');
+          var url = 'https://analytics.ostr.io/' + self.sid + '.gif' + query + '&9=' + (('' + (+new Date())).substr(-7)) + '&v=' + self.version;
+          if (navigator && navigator.sendBeacon) {
+            navigator.sendBeacon(url);
           } else {
-            imageLoader = new Image();
-          }
+            var imageLoader;
+            if (window.Image === undefined) {
+              imageLoader = document.createElement('img');
+            } else {
+              imageLoader = new Image();
+            }
 
-          imageLoader.onload = function () {
-            imageLoader = null;
-          };
+            imageLoader.onload = function () {
+              imageLoader = null;
+            };
 
-          imageLoader.src = 'https://analytics.ostr.io/' + self.sid + '.gif' + query + '&9=' + (('' + (+new Date())).substr(-7)) + '&v=' + self.version;
+            imageLoader.src = url;
+          }
           self.sending = false;
         }, 64);
       }