2 lines
1.5 KiB
JavaScript
2 lines
1.5 KiB
JavaScript
const swconfUrl = '/assets/js/data/swconf.js'; importScripts(swconfUrl); const purge = swconf.purge; function verifyHost(url) { for (const host of swconf.allowHosts) { const regex = RegExp(`^http(s)?://${host}/`); if (regex.test(url)) { return true; } } return false; } function verifyUrl(url) { if (!verifyHost(url)) { return false; } const requestPath = new URL(url).pathname; for (const path of swconf.denyPaths) { if (requestPath.startsWith(path)) { return false; } } return true; } if (!purge) { swconf.allowHosts.push(location.host); } self.addEventListener('install', (event) => { if (purge) { return; } event.waitUntil( caches.open(swconf.cacheName).then((cache) => { return cache.addAll(swconf.resources); }) ); }); self.addEventListener('activate', (event) => { event.waitUntil( caches.keys().then((keyList) => { return Promise.all( keyList.map((key) => { if (purge) { return caches.delete(key); } else { if (key !== swconf.cacheName) { return caches.delete(key); } } }) ); }) ); }); self.addEventListener('message', (event) => { if (event.data === 'SKIP_WAITING') { self.skipWaiting(); } }); self.addEventListener('fetch', (event) => { event.respondWith( caches.match(event.request).then((response) => { if (response) { return response; } return fetch(event.request).then((response) => { const url = event.request.url; if (purge || event.request.method !== 'GET' || !verifyUrl(url)) { return response; } let responseToCache = response.clone(); caches.open(swconf.cacheName).then((cache) => { cache.put(event.request, responseToCache); }); return response; }); }) ); });
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