53 lines
1.3 KiB
JavaScript
53 lines
1.3 KiB
JavaScript
const CACHE = "psu-shell-__REVISION__";
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const ASSETS = /* build assets */ [];
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self.addEventListener("install", (event) => {
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event.waitUntil(
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caches
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.open(CACHE)
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.then((cache) => cache.addAll(ASSETS))
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.then(() => self.skipWaiting()),
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);
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});
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self.addEventListener("activate", (event) => {
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event.waitUntil(
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caches
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.keys()
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.then((keys) =>
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Promise.all(
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keys
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.filter((key) => key.startsWith("psu-shell-") && key !== CACHE)
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.map((key) => caches.delete(key)),
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),
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)
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.then(() => self.clients.claim()),
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);
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});
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self.addEventListener("fetch", (event) => {
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const url = new URL(event.request.url);
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if (
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event.request.method !== "GET" ||
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url.origin !== self.location.origin ||
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url.pathname.startsWith("/api/")
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)
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return;
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event.respondWith(
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fetch(event.request)
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.then((response) => {
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if (response.ok) {
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const copy = response.clone();
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event.waitUntil(
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caches.open(CACHE).then((cache) => cache.put(event.request, copy)),
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);
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}
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return response;
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})
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.catch(
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async () =>
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(await caches.match(event.request)) ||
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(event.request.mode === "navigate"
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? await caches.match("/")
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: Response.error()),
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),
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);
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});
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