no sw caching on localhost

src/index.html

@@ -46,7 +46,6 @@
       window.addEventListener('load', function() {
         navigator.serviceWorker.register('serviceworker.js')
         .then(function(registration) {
-          // Registration was successful
           // console.log('ServiceWorker registration successful with scope: ', registration.scope);
         })
         .catch(function(err) {

src/serviceworker.js

@@ -1,6 +1,7 @@
 var CACHE_NAME = 'iris-messenger-cache-v1';
 
-// stale-while-revalidate caching strategy
+// stale-while-revalidate
+if (self.location.host.indexOf('localhost') !== 0) {
   self.addEventListener('fetch', function(event) {
     event.respondWith(
       caches.open(CACHE_NAME).then(function(cache) {
@@ -14,3 +15,4 @@ self.addEventListener('fetch', function(event) {
       })
     );
   });
+}