Initial commit: Angular frontend and Expressjs backend

worklenz-backend/src/public/safety-worker.js

@@ -0,0 +1,26 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+// tslint:disable:no-console
+
+self.addEventListener('install', event => {
+  self.skipWaiting();
+});
+
+self.addEventListener('activate', event => {
+  event.waitUntil(self.clients.claim());
+
+  event.waitUntil(self.registration.unregister().then(() => {
+    console.log('NGSW Safety Worker - unregistered old service worker');
+  }));
+
+  event.waitUntil(caches.keys().then(cacheNames => {
+    const ngswCacheNames = cacheNames.filter(name => /^ngsw:/.test(name));
+    return Promise.all(ngswCacheNames.map(name => caches.delete(name)));
+  }));
+});