18 lines
813 B
JavaScript
18 lines
813 B
JavaScript
 
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// Network-first for the app shell so a deploy is picked up on next load; cached copy
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// only when offline. API calls and files are never cached here.
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const CACHE = 'wb-shell-v1';
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self.addEventListener('install', (e) => self.skipWaiting());
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self.addEventListener('activate', (e) => e.waitUntil(self.clients.claim()));
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self.addEventListener('fetch', (e) => {
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const url = new URL(e.request.url);
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if (e.request.method !== 'GET' || url.origin !== location.origin) return;
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if (url.pathname.startsWith('/api/') || url.pathname.startsWith('/files/')) return;
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e.respondWith(
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fetch(e.request).then((res) => {
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const copy = res.clone();
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caches.open(CACHE).then((c) => c.put(e.request, copy));
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return res;
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}).catch(() => caches.match(e.request).then((r) => r || caches.match('/')))
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);
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});
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