Initial commit

static/service-worker.js

@@ -0,0 +1,98 @@
+// Service worker for SvelteMUD Client PWA
+const CACHE_NAME = 'svelte-mud-v1';
+const ASSETS_TO_CACHE = [
+  '/',
+  '/index.html',
+  '/manifest.json',
+  '/favicon.ico',
+  '/global.css',
+  '/build/bundle.css',
+  '/build/bundle.js'
+];
+
+// Install event - cache critical assets
+self.addEventListener('install', (event) => {
+  event.waitUntil(
+    caches.open(CACHE_NAME)
+      .then((cache) => {
+        return cache.addAll(ASSETS_TO_CACHE);
+      })
+      .then(() => {
+        return self.skipWaiting();
+      })
+  );
+});
+
+// Activate event - clean up old caches
+self.addEventListener('activate', (event) => {
+  event.waitUntil(
+    caches.keys().then((cacheNames) => {
+      return Promise.all(
+        cacheNames.map((cacheName) => {
+          if (cacheName !== CACHE_NAME) {
+            return caches.delete(cacheName);
+          }
+        })
+      );
+    }).then(() => {
+      return self.clients.claim();
+    })
+  );
+});
+
+// Fetch event - serve from cache if available, otherwise fetch from network
+self.addEventListener('fetch', (event) => {
+  // Skip cross-origin requests
+  if (!event.request.url.startsWith(self.location.origin) || 
+      event.request.method !== 'GET') {
+    return;
+  }
+
+  // For navigation requests (HTML pages), use a network-first strategy
+  if (event.request.mode === 'navigate') {
+    event.respondWith(
+      fetch(event.request)
+        .catch(() => {
+          return caches.match(event.request);
+        })
+    );
+    return;
+  }
+
+  // For all other requests, use a cache-first strategy
+  event.respondWith(
+    caches.match(event.request)
+      .then((response) => {
+        if (response) {
+          return response;
+        }
+        
+        // Clone the request because it's a one-time use stream
+        const fetchRequest = event.request.clone();
+        
+        return fetch(fetchRequest).then((response) => {
+          // Check if valid response
+          if (!response || response.status !== 200 || response.type !== 'basic') {
+            return response;
+          }
+          
+          // Clone the response because it's a one-time use stream
+          const responseToCache = response.clone();
+          
+          caches.open(CACHE_NAME)
+            .then((cache) => {
+              cache.put(event.request, responseToCache);
+            });
+            
+          return response;
+        });
+      })
+  );
+});
+
+// Listen for messages from clients
+self.addEventListener('message', (event) => {
+  if (event.data && event.data.type === 'SKIP_WAITING') {
+    self.skipWaiting();
+  }
+});