56 lines
1.4 KiB
JavaScript
56 lines
1.4 KiB
JavaScript
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const CACHE_NAME = 'lonc-shell-v1';
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const APP_SHELL = ['/', '/index.html', '/manifest.webmanifest', '/offline.html', '/icons/icon.svg', '/icons/icon-mask.svg'];
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self.addEventListener('install', (event) => {
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event.waitUntil(caches.open(CACHE_NAME).then((cache) => cache.addAll(APP_SHELL)));
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self.skipWaiting();
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});
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self.addEventListener('activate', (event) => {
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event.waitUntil(
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caches.keys().then((keys) =>
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Promise.all(
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keys
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.filter((key) => key !== CACHE_NAME)
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.map((key) => caches.delete(key)),
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),
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),
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);
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self.clients.claim();
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});
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self.addEventListener('fetch', (event) => {
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if (event.request.method !== 'GET') {
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return;
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}
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const requestUrl = new URL(event.request.url);
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if (requestUrl.origin !== self.location.origin) {
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return;
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}
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if (event.request.mode === 'navigate') {
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event.respondWith(
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fetch(event.request).catch(async () => {
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const shell = await caches.match('/index.html');
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return shell || caches.match('/offline.html');
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}),
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);
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return;
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}
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event.respondWith(
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caches.match(event.request).then((response) => {
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return (
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response ||
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fetch(event.request).then((networkResponse) => {
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const clone = networkResponse.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
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return networkResponse;
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})
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);
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}),
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);
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});
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