'use strict'; const MANIFEST = 'flutter-app-manifest'; const TEMP = 'flutter-temp-cache'; const CACHE_NAME = 'flutter-app-cache'; const RESOURCES = {"assets/AssetManifest.bin": "0b0a3415aad49b6e9bf965ff578614f9", "assets/AssetManifest.bin.json": "a1fee2517bf598633e2f67fcf3e26c94", "assets/AssetManifest.json": "99914b932bd37a50b983c5e7c90ae93b", "assets/FontManifest.json": "7b2a36307916a9721811788013e65289", "assets/fonts/MaterialIcons-Regular.otf": "0db35ae7a415370b89e807027510caf0", "assets/NOTICES": "1d15f9e2616e0c487485bbd796a82bb4", "assets/shaders/ink_sparkle.frag": "ecc85a2e95f5e9f53123dcaf8cb9b6ce", "canvaskit/canvaskit.js": "26eef3024dbc64886b7f48e1b6fb05cf", "canvaskit/canvaskit.js.symbols": "efc2cd87d1ff6c586b7d4c7083063a40", "canvaskit/canvaskit.wasm": "e7602c687313cfac5f495c5eac2fb324", "canvaskit/chromium/canvaskit.js": "b7ba6d908089f706772b2007c37e6da4", "canvaskit/chromium/canvaskit.js.symbols": "e115ddcfad5f5b98a90e389433606502", "canvaskit/chromium/canvaskit.wasm": "ea5ab288728f7200f398f60089048b48", "canvaskit/skwasm.js": "ac0f73826b925320a1e9b0d3fd7da61c", "canvaskit/skwasm.js.symbols": "96263e00e3c9bd9cd878ead867c04f3c", "canvaskit/skwasm.wasm": "828c26a0b1cc8eb1adacbdd0c5e8bcfa", "canvaskit/skwasm.worker.js": "89990e8c92bcb123999aa81f7e203b1c", "favicon.png": "a8dac4984aa5229f2f2c176b2b626e1f", "flutter.js": "4b2350e14c6650ba82871f60906437ea", "flutter_bootstrap.js": "325864442292aa5f75e899ec22f8f189", "icons/Icon-192.png": "ab1f3346eb3e23e19304ac088cc236c1", "icons/Icon-512.png": "29fa67fed2325c5febd96dd9180e60dc", "icons/Icon-maskable-192.png": "c8230bd12eac2e925faa8531f5633292", "icons/Icon-maskable-512.png": "4eb4557b51424f785b4dcf7096a9fdde", "icons/icon.png": "05d3e2fc50953462d65573d2d14a08aa", "index.html": "7d3b2cf31efb546199ca72c05f92f77d", "/": "7d3b2cf31efb546199ca72c05f92f77d", "main.dart.js": "cc24e470e01472dbd8cfa6db657afc85", "manifest.json": "27a391c5ac472fe33d066bdd6e1c50be", "version.json": "da11dc51486ca396fa77df44efc636c4"}; // The application shell files that are downloaded before a service worker can // start. const CORE = ["main.dart.js", "index.html", "flutter_bootstrap.js", "assets/AssetManifest.bin.json", "assets/FontManifest.json"]; // During install, the TEMP cache is populated with the application shell files. self.addEventListener("install", (event) => { self.skipWaiting(); return event.waitUntil( caches.open(TEMP).then((cache) => { return cache.addAll( CORE.map((value) => new Request(value, {'cache': 'reload'}))); }) ); }); // During activate, the cache is populated with the temp files downloaded in // install. If this service worker is upgrading from one with a saved // MANIFEST, then use this to retain unchanged resource files. self.addEventListener("activate", function(event) { return event.waitUntil(async function() { try { var contentCache = await caches.open(CACHE_NAME); var tempCache = await caches.open(TEMP); var manifestCache = await caches.open(MANIFEST); var manifest = await manifestCache.match('manifest'); // When there is no prior manifest, clear the entire cache. if (!manifest) { await caches.delete(CACHE_NAME); contentCache = await caches.open(CACHE_NAME); for (var request of await tempCache.keys()) { var response = await tempCache.match(request); await contentCache.put(request, response); } await caches.delete(TEMP); // Save the manifest to make future upgrades efficient. await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES))); // Claim client to enable caching on first launch self.clients.claim(); return; } var oldManifest = await manifest.json(); var origin = self.location.origin; for (var request of await contentCache.keys()) { var key = request.url.substring(origin.length + 1); if (key == "") { key = "/"; } // If a resource from the old manifest is not in the new cache, or if // the MD5 sum has changed, delete it. Otherwise the resource is left // in the cache and can be reused by the new service worker. if (!RESOURCES[key] || RESOURCES[key] != oldManifest[key]) { await contentCache.delete(request); } } // Populate the cache with the app shell TEMP files, potentially overwriting // cache files preserved above. for (var request of await tempCache.keys()) { var response = await tempCache.match(request); await contentCache.put(request, response); } await caches.delete(TEMP); // Save the manifest to make future upgrades efficient. await manifestCache.put('manifest', new Response(JSON.stringify(RESOURCES))); // Claim client to enable caching on first launch self.clients.claim(); return; } catch (err) { // On an unhandled exception the state of the cache cannot be guaranteed. console.error('Failed to upgrade service worker: ' + err); await caches.delete(CACHE_NAME); await caches.delete(TEMP); await caches.delete(MANIFEST); } }()); }); // The fetch handler redirects requests for RESOURCE files to the service // worker cache. self.addEventListener("fetch", (event) => { if (event.request.method !== 'GET') { return; } var origin = self.location.origin; var key = event.request.url.substring(origin.length + 1); // Redirect URLs to the index.html if (key.indexOf('?v=') != -1) { key = key.split('?v=')[0]; } if (event.request.url == origin || event.request.url.startsWith(origin + '/#') || key == '') { key = '/'; } // If the URL is not the RESOURCE list then return to signal that the // browser should take over. if (!RESOURCES[key]) { return; } // If the URL is the index.html, perform an online-first request. if (key == '/') { return onlineFirst(event); } event.respondWith(caches.open(CACHE_NAME) .then((cache) => { return cache.match(event.request).then((response) => { // Either respond with the cached resource, or perform a fetch and // lazily populate the cache only if the resource was successfully fetched. return response || fetch(event.request).then((response) => { if (response && Boolean(response.ok)) { cache.put(event.request, response.clone()); } return response; }); }) }) ); }); self.addEventListener('message', (event) => { // SkipWaiting can be used to immediately activate a waiting service worker. // This will also require a page refresh triggered by the main worker. if (event.data === 'skipWaiting') { self.skipWaiting(); return; } if (event.data === 'downloadOffline') { downloadOffline(); return; } }); // Download offline will check the RESOURCES for all files not in the cache // and populate them. async function downloadOffline() { var resources = []; var contentCache = await caches.open(CACHE_NAME); var currentContent = {}; for (var request of await contentCache.keys()) { var key = request.url.substring(origin.length + 1); if (key == "") { key = "/"; } currentContent[key] = true; } for (var resourceKey of Object.keys(RESOURCES)) { if (!currentContent[resourceKey]) { resources.push(resourceKey); } } return contentCache.addAll(resources); } // Attempt to download the resource online before falling back to // the offline cache. function onlineFirst(event) { return event.respondWith( fetch(event.request).then((response) => { return caches.open(CACHE_NAME).then((cache) => { cache.put(event.request, response.clone()); return response; }); }).catch((error) => { return caches.open(CACHE_NAME).then((cache) => { return cache.match(event.request).then((response) => { if (response != null) { return response; } throw error; }); }); }) ); }