updated service worker

src/service-worker.js

@@ -11,7 +11,7 @@
 // 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.
-
+const CACHE_VERSION = 1;
 const dataCacheName = 'traintimesData-v1';
 const cacheName = 'traintimePWA-final-1';
 const filesToCache = [
@@ -20,11 +20,12 @@ const filesToCache = [
   '/service-worker.js',
   '/manifest.json',
   '/browserconfig.xml',
-  '/css/common.css',
+  '/css/style.min.css',
   '/css/mui.custom.css',
   '/fonts/fonts.css',
-  '/fonts/Roboto_Condensed-normal-400.woff',
-  '/fonts/Roboto_Slab-normal-400.woff',
+  '/fonts/gotham.css',
+  '/fonts/Roboto-normal-400.woff',
+  '/fonts/Roboto_Mono-normal-400.woff',
   '/js/bundle.js',
   '/js/vendor.js',
   '/img/Icon-36.png',
@@ -41,7 +42,7 @@ self.addEventListener('install', function(e) {
   e.waitUntil(
     caches.open(cacheName).then(function(cache) {
       console.log('[ServiceWorker] Caching app shell');
-      
+
       return cache.addAll(filesToCache);
     })
   );
@@ -54,7 +55,7 @@ self.addEventListener('activate', function(e) {
       return Promise.all(keyList.map(function(key) {
         if (key !== cacheName && key !== dataCacheName) {
           console.log('[ServiceWorker] Removing old cache', key);
-          
+
           return caches.delete(key);
         }
       }));
@@ -91,13 +92,13 @@ self.addEventListener('fetch', function(e) {
       caches.open(dataCacheName).then(function(cache) {
         return fetch(e.request).then(function(response) {
           cache.put(e.request.url, response.clone());
-          
+
           return response;
         });
       })
     );
   }
-  else 
+  else
 
     /*
      * The app is asking for app shell files. In this scenario the app uses the