patch.diff

diff --git a/cache-then-network/sw.js b/cache-then-network/sw.js
index 9449f5f..8170159 100644
--- a/cache-then-network/sw.js
+++ b/cache-then-network/sw.js
@@ -6,15 +6,12 @@ var cacheName = 'cache-then-network';
 
 self.addEventListener('install', function(ev) {
   console.log('SW install event');
-  self.skipWaiting();
-  ev.waitUntil(self.clients.claim());
-  console.log('Leaving SW install event');
+  ev.waitUntil(self.skipWaiting());
 });
 
 self.addEventListener('activate', function(ev) {
-  console.log('SW activate event');
+  console.log('SW activate');
   ev.waitUntil(self.clients.claim());
-  console.log('Leaving SW activate event');
 });
 
 self.addEventListener('fetch', function(ev) {
@@ -29,10 +26,9 @@ self.addEventListener('fetch', function(ev) {
         console.log('SW opened cache');
         cache.put(reqURL, res);
         console.log('SW cached data');
-        console.log('Cache keys:');
-        for (var it = 0; it < cache.keys().length; it++) {
-          console.log('\t' + cache.keys()[it]);
-        }
+        cache.keys().then(function(response) {
+          console.log('Cache keys:', response);
+        });
       });
       console.log('SW returning response');
       return res.clone();