dekun
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
/* Minimal service worker: makes the app installable on desktop & tablet. */
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const CACHE = "eth-hedge-shell-v1";
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const PRECACHE = ["/", "/plan", "/manifest.webmanifest", "/icons/icon-192.png"];
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self.addEventListener("install", (event) => {
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event.waitUntil(
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caches.open(CACHE).then((cache) => cache.addAll(PRECACHE)).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.keys().then((keys) =>
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Promise.all(keys.filter((k) => k !== CACHE).map((k) => caches.delete(k))),
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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 req = event.request;
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if (req.method !== "GET") return;
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const url = new URL(req.url);
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if (url.origin !== self.location.origin) return;
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// Never cache API / health / websocket-ish paths
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if (url.pathname.startsWith("/api") || url.pathname === "/health") return;
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event.respondWith(
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fetch(req)
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.then((res) => {
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if (res.ok && (url.pathname.startsWith("/assets") || url.pathname === "/")) {
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const copy = res.clone();
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caches.open(CACHE).then((cache) => cache.put(req, copy));
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}
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return res;
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})
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.catch(() => caches.match(req).then((hit) => hit || caches.match("/"))),
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);
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});
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