service worker updater fixes

Signed-off-by: Matt Friedman <maf675@gmail.com>

Author: iMattPro

styles/all/template/update_worker.js

@@ -13,14 +13,15 @@ function webpushWorkerUpdate() {
 	}
 }
 // Do not redeclare function if exist
+/* global domReady */
 if (typeof domReady === 'undefined') {
 	window.domReady = function(callBack) {
 		if (document.readyState === 'loading') {
 			document.addEventListener('DOMContentLoaded', callBack);
 		} else {
 			callBack();
 		}
-	}
+	};
 }
 
 domReady(() => {

styles/prosilver/template/event/overall_footer_after.html

@@ -1,4 +1,6 @@
-<script>
-	const serviceWorkerUrl = '{{ U_WEBPUSH_WORKER_URL }}';
-</script>
-{% INCLUDEJS('@phpbb_webpushnotifications/update_worker.js') %}
+{% if U_WEBPUSH_WORKER_URL %}
+	<script>
+		const serviceWorkerUrl = '{{ U_WEBPUSH_WORKER_URL }}';
+	</script>
+	{% INCLUDEJS '@phpbb_webpushnotifications/update_worker.js' %}
+{% endif %}

styles/prosilver/template/ucp_notifications_webpush.html

@@ -17,5 +17,5 @@
 	}
 </script>
 
-{% INCLUDEJS('@phpbb_webpushnotifications/webpush.js') %}
-{% INCLUDECSS('@phpbb_webpushnotifications/phpbb_wpn.css') %}
+{% INCLUDEJS '@phpbb_webpushnotifications/webpush.js' %}
+{% INCLUDECSS '@phpbb_webpushnotifications/phpbb_wpn.css' %}