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/// <reference lib="webworker" />
const sw = self as unknown as ServiceWorkerGlobalScope & {
__precacheManifest: ({ url: string, revision: string })[];
};
const precacheVersion = sw.__precacheManifest
.map(p => p.revision)
.join('');
const precacheFiles = sw.__precacheManifest.map(p => p.url).filter(
u => /\.(ico)$/.test(u)
);
const ch = () => caches.open(precacheVersion);
sw.addEventListener('install', ev => {
// Do not finish installing until every file in the app has been cached
ev.waitUntil(
ch().then(
cache => cache.addAll(precacheFiles)
)
);
});
sw.addEventListener('activate', ev => {
ev.waitUntil(
caches.keys().then(keys => Promise.all(
keys.filter(k => k !== precacheVersion).map(
k => caches.delete(k)
)
)).then(() => sw.clients.claim())
);
});
sw.addEventListener('fetch', ev => {
ev.respondWith(
caches.match(ev.request).then(resp => resp || ch().then(c =>
fetch(ev.request).then(res => c.put(ev.request, res.clone()).then(
() => res
))
))
)
});
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