use correct reference to registration

app.js

@@ -70,8 +70,8 @@ class Setup {
           '/sw.js',
           {scope: '/'}
         )
-      if (registration.waiting) {
-        registration.active.postMessage(['skipWaiting'])
+      if (this.registration.waiting) {
+        this.registration.active.postMessage(['skipWaiting'])
       }
     } catch (err) {
       console.error(

sw.js

@@ -25,7 +25,7 @@ async function initCache() {
     '/settings/connections.js',
     '/settings/connection-edit.js',
     '/editor-lib-codemirror/codemirror-bundle.js',
-  ])
+  ]) //1
 }
 
 self.addEventListener("install", event => {