Adding old sw just in case

Author: Matt Gaunt

src/old-sw.es6.js

@@ -0,0 +1,106 @@
+/**
+ * Copyright 2015 Google Inc. All rights reserved.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+importScripts('third_party/serviceworker-cache-polyfill.js');
+
+var CACHE_NAME = 'appshell';
+var CACHE_VERSION = '@VERSION@';
+
+self.oninstall = function(event) {
+  var urls = [
+    '/app-shell',
+    '/images/chrome-touch-icon-192x192.png',
+
+    '/images/[email protected]',
+
+    '/images/ic_menu_24px.svg',
+    '/images/ic_add_24px.svg',
+    '/images/ic_info_outline_24px.svg',
+
+    '/scripts/core.js',
+    '/styles/core.css',
+
+    '/favicon.ico',
+    '/manifest.json',
+
+    '/partials/',
+    '/partials/url-1',
+    '/partials/url-2',
+    '/partials/index'
+  ];
+
+  urls = urls.map(function(url) {
+    return new Request(url, {credentials: 'include'});
+  });
+
+  event.waitUntil(
+    caches
+      .open(CACHE_NAME + '-v' + CACHE_VERSION)
+      .then(function(cache) {
+        return cache.addAll(urls);
+      })
+  );
+};
+
+self.onactivate = function(event) {
+  var currentCacheName = CACHE_NAME + '-v' + CACHE_VERSION;
+  caches.keys().then(function(cacheNames) {
+    return Promise.all(
+      cacheNames.map(function(cacheName) {
+        // TODO: This should never get called
+        // can we drop this check?
+        if (cacheName.indexOf(CACHE_NAME) === -1) {
+          return;
+        }
+
+        if (cacheName !== currentCacheName) {
+          return caches.delete(cacheName);
+        }
+      })
+    );
+  });
+};
+
+self.onfetch = function(event) {
+  var request = event.request;
+  event.respondWith(
+    // Check the cache for a hit of the asset as is.
+    caches.match(request).then((response) => {
+      // If we have a response return it.
+      if (response) {
+        console.log('    sw: [cached] ' + request.url);
+        return response;
+      }
+
+      // For other requests on our domain, return the app shell
+      var url = new URL(request.url);
+      if (url.host === this.location.host) {
+        if (
+          url.pathname.indexOf('.') === -1 &&
+          url.pathname.indexOf('/partials') !== 0
+        ) {
+          console.log('    sw: [app-shell redirect] ' + request.url);
+          return caches.match('/app-shell');
+        }
+      }
+
+      // If here, then it should be a request for external url
+      // analytics or web fonts for example.
+      console.log('    sw: [fetch] ' + request.url);
+      return fetch(request);
+    })
+  );
+};