serviceWorker in html

index.html

@@ -218,8 +218,6 @@
     <script src="js/game_logic.js" language="Javascript" type="text/javascript"></script>
     <script src="js/interface.js"  language="Javascript" type="text/javascript"></script>
     <script src="js/app.js"        language="Javascript" type="text/javascript"></script>
-    <script>
-      
-    </script>
+    <script>navigator?.serviceWorker.register('js/service-worker.js')</script>
   </body>
 </html>

js/app.js

@@ -257,8 +257,3 @@ window.onbeforeunload = function(event) {
     settings.save()
     if (playing) return false;
 }
-
-
-if ('serviceWorker' in navigator) {
-    navigator.serviceWorker.register('js/service-worker.js');
-}