Fixed reversal of files

js/register.js

@@ -1,36 +1,5 @@
-const CACHE_NAME = 'offline';
-
-self.addEventListener('activate', (event) => {
-  console.log('[SW] Active');
-  event.waitUntil((async () => {
-    // Enable navigation preload if it's supported.
-    // See https://developers.google.com/web/updates/2017/02/navigation-preload
-    if ('navigationPreload' in self.registration) {
-      await self.registration.navigationPreload.enable();
-    }
-  })());
-
-  self.clients.claim();
-});
-
-self.addEventListener('fetch', function(event) {
-    console.log('[SW] grab', event.request.url);
-  if (event.request.mode === 'navigate') {
-    event.respondWith((async () => {
-      try {
-        const preloadResponse = await event.preloadResponse;
-        if (preloadResponse) {
-          return preloadResponse;
-        }
-
-        const networkResponse = await fetch(event.request);
-        return networkResponse;
-      } catch (error) {
-        console.log('[SW] grab failed', error);
-
-        const cache = await caches.open(CACHE_NAME);
-        return cachedResponse;
-      }
-    })());
-  }
-});
+if ('serviceWorker' in navigator) {
+  window.addEventListener('load', function() {
+    navigator.serviceWorker.register('/sw.js');
+  });
+}