vue.js used

public/manifest.json

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+{
+    "name": "Nexus Timer",
+    "short_name": "NexusTimer",
+    "description": "A dynamic multi-player timer for games and workshops.",
+    "start_url": "/",
+    "display": "standalone",
+    "background_color": "#1f2937",
+    "theme_color": "#3b82f6",
+    "icons": [
+      {
+        "src": "/icons/icon-192x192.png",
+        "sizes": "192x192",
+        "type": "image/png"
+      },
+      {
+        "src": "/icons/icon-512x512.png",
+        "sizes": "512x512",
+        "type": "image/png"
+      }
+    ]
+  }

public/service-worker.js

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+const CACHE_NAME = 'nexus-timer-cache-v1';
+const urlsToCache = [
+  '/',
+  '/index.html',
+  '/manifest.json',
+  '/favicon.ico',
+  '/icons/icon-192x192.png',
+  '/icons/icon-512x512.png',
+  // Add other static assets here, like JS/CSS bundles if not dynamically named
+  // Vite typically names bundles with hashes, so caching them directly might be tricky
+  // For a PWA, focus on caching the app shell and key static assets
+];
+
+self.addEventListener('install', event => {
+  event.waitUntil(
+    caches.open(CACHE_NAME)
+      .then(cache => {
+        console.log('Opened cache');
+        return cache.addAll(urlsToCache);
+      })
+  );
+});
+
+self.addEventListener('fetch', event => {
+  event.respondWith(
+    caches.match(event.request)
+      .then(response => {
+        if (response) {
+          return response; // Serve from cache
+        }
+        return fetch(event.request); // Fetch from network
+      })
+  );
+});
+
+self.addEventListener('activate', event => {
+  const cacheWhitelist = [CACHE_NAME];
+  event.waitUntil(
+    caches.keys().then(cacheNames => {
+      return Promise.all(
+        cacheNames.map(cacheName => {
+          if (cacheWhitelist.indexOf(cacheName) === -1) {
+            return caches.delete(cacheName);
+          }
+        })
+      );
+    })
+  );
+});