1self.importScripts('./service-worker-assets.js'); 2self.addEventListener('install', event => event.waitUntil(onInstall(event))); 3self.addEventListener('activate', event => event.waitUntil(onActivate(event))); 4self.addEventListener('fetch', event => event.respondWith(onFetch(event))); 5 6const cacheNamePrefix = 'offline-cache-'; 7const cacheName = `${cacheNamePrefix}${self.assetsManifest.version}`; 8const offlineAssetsInclude = [/\.dll$/, /\.pdb$/, /\.wasm/, /\.html/, /\.js$/, /\.json$/, /\.css$/, /\.woff$/, /\.png$/, /\.jpe?g$/, /\.gif$/, /\.ico$/, /\.blat$/, /\.dat$/, /\.webmanifest$/]; 9const offlineAssetsExclude = [/^service-worker\.js$/]; 10 11const base = "/"; 12const baseUrl = new URL(base, self.origin); 13const manifestUrlList = self.assetsManifest.assets.map(asset => new URL(asset.url, baseUrl).href); 14 15async function onInstall(event) { 16 console.info('Service worker: Install'); 17 18 const assetsRequests = self.assetsManifest.assets 19 .filter(asset => offlineAssetsInclude.some(pattern => pattern.test(asset.url))) 20 .filter(asset => !offlineAssetsExclude.some(pattern => pattern.test(asset.url))) 21 .map(asset => new Request(asset.url, { integrity: asset.hash, cache: 'no-cache' })); 22 await caches.open(cacheName).then(cache => cache.addAll(assetsRequests)); 23} 24 25async function onActivate(event) { 26 console.info('Service worker: Activate'); 27 28 const cacheKeys = await caches.keys(); 29 await Promise.all(cacheKeys 30 .filter(key => key.startsWith(cacheNamePrefix) && key !== cacheName) 31 .map(key => caches.delete(key))); 32} 33 34async function onFetch(event) { 35 let cachedResponse = null; 36 if (event.request.method === 'GET') { 37 38 const shouldServeIndexHtml = event.request.mode === 'navigate' 39 && !manifestUrlList.some(url => url === event.request.url); 40 41 const request = shouldServeIndexHtml ? 'index.html' : event.request; 42 const cache = await caches.open(cacheName); 43 cachedResponse = await cache.match(request); 44 } 45 46 return cachedResponse || fetch(event.request); 47}
Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.