29 lines
815 B
JavaScript
29 lines
815 B
JavaScript
const CACHE = 'posimai-veil-v1';
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const ASSETS = ['/', '/index.html', '/manifest.json'];
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const ORIGIN = self.location.origin;
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self.addEventListener('install', e => {
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e.waitUntil(
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caches.open(CACHE).then(c => c.addAll(ASSETS))
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);
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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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)
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);
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self.clients.claim();
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});
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self.addEventListener('fetch', e => {
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// クロスオリジンリクエストはキャッシュしない（API等が古いデータを返すのを防ぐ）
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if (!e.request.url.startsWith(ORIGIN)) return;
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e.respondWith(
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caches.match(e.request).then(cached => cached || fetch(e.request))
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);
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});
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