1 files changed, 23 insertions, 11 deletions

diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 24d9d52..a232ff5 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -15,11 +15,11 @@
 <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent" />
 
 <title>
-    {{ if .IsHome}}
-    {{ site.Title }}
-    {{ else }}
-    {{ .Title }}
-    {{ end }}
+  {{ if .IsHome}}
+  {{ site.Title }}
+  {{ else }}
+  {{ .Title }}
+  {{ end }}
 </title>
 
 {{ partialCached "head/css.html" . }}
@@ -27,15 +27,27 @@
 
 <script>
 
-if ('serviceWorker' in navigator) {
-
-navigator.serviceWorker.register('/sw.js');
-
-};
+  if ('serviceWorker' in navigator) {
+
+    navigator.serviceWorker.register('/sw.js').then(reg => {
+      reg.onupdatefound = () => {
+        const installingWorker = reg.installing;
+        installingWorker.onstatechange = () => {
+          if (installingWorker.state === 'installed') {
+            if (navigator.serviceWorker.controller) {
+              // New content is available
+              alert("New version available! Refreshing...");
+              window.location.reload();
+            }
+          }
+        };
+      };
+    });
+  };
 
 </script>
 
 
 {{ if hugo.IsProduction }}
 {{ template "_internal/google_analytics.html" . }}
-{{ end }}
\ No newline at end of file
+{{ end }}