'use strict'; const MANIFEST = 'flutter-app-manifest'; const TEMP = 'flutter-temp-cache'; const CACHE_NAME = 'flutter-app-cache'; const RESOURCES = {"icons/Icon-maskable-512.png": "301a7604d45b3e739efc881eb04896ea", "icons/Icon-192.png": "ac9a721a12bbc803b44f645561ecb1e1", "icons/Icon-512.png": "96e752610906ba2a93c65f8abe1645f1", "icons/Icon-maskable-192.png": "c457ef57daa1d16f64b27b786ec2ea3c", "assets/FontManifest.json": "dc3d03800ccca4601324923c0b1d6d57", "assets/AssetManifest.bin.json": "69a99f98c8b1fb8111c5fb961769fcd8", "assets/shaders/ink_sparkle.frag": "ecc85a2e95f5e9f53123dcaf8cb9b6ce", "assets/fonts/MaterialIcons-Regular.otf": "7a4d3f4ca5eebbed72fb167bff54fb96", "assets/AssetManifest.bin": "693635b5258fe5f1cda720cf224f158c", "assets/packages/cupertino_icons/assets/CupertinoIcons.ttf": "e986ebe42ef785b27164c36a9abc7818", "assets/AssetManifest.json": "2efbb41d7877d10aac9d091f58ccd7b9", "assets/NOTICES": "46d0b4197450c4c3dbcd88ecdad770c8", "index.html": "47af9852b0380cb182f42ed6dce24e60", "/": "47af9852b0380cb182f42ed6dce24e60", "main.dart.js": "e9d1f4fbebdc50459168279edd7eb7f2", "favicon.png": "5dcef449791fa27946b3d35ad8803796", "version.json": "f18d220f770434409d5d68bddf9bd1af", "flutter_bootstrap.js": "e5eeaac7859d6320974ff17187883a5e", "canvaskit/skwasm.js.symbols": "262f4827a1317abb59d71d6c587a93e2", "canvaskit/skwasm.wasm": "9f0c0c02b82a910d12ce0543ec130e60", "canvaskit/chromium/canvaskit.wasm": "b1ac05b29c127d86df4bcfbf50dd902a", "canvaskit/chromium/canvaskit.js.symbols": "a012ed99ccba193cf96bb2643003f6fc", "canvaskit/chromium/canvaskit.js": "87325e67bf77a9b483250e1fb1b54677", "canvaskit/canvaskit.wasm": "1f237a213d7370cf95f443d896176460", "canvaskit/canvaskit.js.symbols": "48c83a2ce573d9692e8d970e288d75f7", "canvaskit/canvaskit.js": "5fda3f1af7d6433d53b24083e2219fa0", "canvaskit/skwasm.worker.js": "bfb704a6c714a75da9ef320991e88b03", "canvaskit/skwasm.js": "9fa2ffe90a40d062dd2343c7b84caf01", "manifest.json": "05f725318f41bf1601ead9ffa9355535", "flutter.js": "f31737fb005cd3a3c6bd9355efd33061"}; // 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; }); }); }) ); }