From f55b0c9e040d7a821ee5308f51e847bef14036d3 Mon Sep 17 00:00:00 2001
From: Vincent Vanwaelscappel <vincent@cubedesigners.com>
Date: Mon, 31 Aug 2020 11:47:51 +0200
Subject: [PATCH] wait #3861 @0.5

---
 js/libs/fluidbook/fluidbook.stats.js | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/js/libs/fluidbook/fluidbook.stats.js b/js/libs/fluidbook/fluidbook.stats.js
index 7eddfb6e..ab23795e 100644
--- a/js/libs/fluidbook/fluidbook.stats.js
+++ b/js/libs/fluidbook/fluidbook.stats.js
@@ -11,9 +11,13 @@ function FluidbookStats(fluidbook) {
     if (this.fluidbook.settings.googleAnalytics !== '') {
         this.ga = 'gtag';
         this.gaCodes = this.fluidbook.settings.googleAnalytics.split(',');
-        gtag('js', new Date());
+        if (window.gtag !== undefined) {
+            gtag('js', new Date());
+        }
         $.each(this.gaCodes, function (k, code) {
-            gtag('config', code, {'send_page_view': false});
+            if (window.gtag !== undefined) {
+                gtag('config', code, {'send_page_view': false});
+            }
         });
     } else {
         if ('ga' in window) {
@@ -37,6 +41,8 @@ function FluidbookStats(fluidbook) {
 }
 
 FluidbookStats.prototype = {
+
+
     init: function () {
 
         var $this = this;
@@ -162,10 +168,14 @@ FluidbookStats.prototype = {
 
             if (c) {
                 $.each(this.gaCodes, function (k, code) {
-                    gtag(f, code, o);
+                    if (window.gtag !== undefined) {
+                        gtag(f, code, o);
+                    }
                 });
             } else {
-                gtag(f, a, o);
+                if (window.gtag !== undefined) {
+                    gtag(f, a, o);
+                }
             }
         } else if (this.ga === 'ga') {
             args.unshift('send');
-- 
2.39.5