52 lines
1.3 KiB
JavaScript
52 lines
1.3 KiB
JavaScript
const CACHE_NAME = 'arithmancy-pwa-v1';
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const ASSETS = [
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'./',
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'./index.html',
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'./style.css',
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'./app.js',
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'./manifest.webmanifest',
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'./icons/icon-192.png',
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'./icons/icon-512.png'
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];
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME).then((cache) => cache.addAll(ASSETS))
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);
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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(keys.filter((key) => key !== CACHE_NAME).map((key) => caches.delete(key)))
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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') return;
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event.respondWith(
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caches.match(event.request).then((cached) => {
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if (cached) return cached;
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return fetch(event.request)
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.then((response) => {
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const shouldCache =
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response && response.status === 200 && response.type === 'basic' && event.request.url.startsWith(self.location.origin);
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if (shouldCache) {
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const clone = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(event.request, clone));
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}
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return response;
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})
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.catch(() => {
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if (event.request.mode === 'navigate') {
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return caches.match('./');
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}
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});
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})
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);
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});
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