Add files via upload

projects/rock-paper-scissor/manifest.json

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+{
+    "short_name": "Portfolio",
+    "name": "My PWA Portfolio",
+    "icons": [
+      {
+        "src": "assets/images/logo.png",
+        "type": "image/png",
+        "sizes": "192x192"
+      },
+      {
+        "src": "assets/images/logo.png",
+        "type": "image/png",
+        "sizes": "512x512"
+      }
+    ],
+    "start_url": "/index.html",
+    "background_color": "#000000",
+    "display": "standalone",
+    "theme_color": "#ff0000"
+  }

projects/rock-paper-scissor/sw.js

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+// On install - caching the application shell
+self.addEventListener('install', function(event) {
+    event.waitUntil(
+      caches.open('sw-cache').then(function(cache) {
+        // cache any static files that make up the application shell
+        return cache.add('index.html');
+      })
+    );
+  });
+
+  // On network request
+  self.addEventListener('fetch', function(event) {
+    event.respondWith(
+      // Try the cache
+      caches.match(event.request).then(function(response) {
+        //If response found return it, else fetch again
+        return response || fetch(event.request);
+      })
+    );
+  });