33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
const CACHE = 'posimai-atlas-v1';
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const STATIC = ['/', '/index.html', '/manifest.json', '/logo.png', '/atlas.json'];
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self.addEventListener('install', e => {
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e.waitUntil(caches.open(CACHE).then(c => c.addAll(STATIC)));
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self.skipWaiting();
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});
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self.addEventListener('activate', e => {
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e.waitUntil(
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caches.keys().then(keys =>
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Promise.all(keys.filter(k => k !== CACHE).map(k => caches.delete(k)))
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).then(() => self.clients.claim())
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);
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});
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self.addEventListener('fetch', e => {
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if (e.request.method !== 'GET') return;
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if (!e.request.url.startsWith(self.location.origin)) return;
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e.respondWith(
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caches.open(CACHE).then(cache =>
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cache.match(e.request).then(cached => {
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const network = fetch(e.request).then(res => {
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if (res.ok && res.type === 'basic') cache.put(e.request, res.clone());
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return res;
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}).catch(() => cached);
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return cached || network;
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})
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)
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);
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});
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