32 lines
918 B
JavaScript
32 lines
918 B
JavaScript
// Minimal service worker — enables PWA install + an offline fallback for
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// navigations. Live market data is never cached (always hits the network).
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const SHELL = "yz-shell-v1";
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self.addEventListener("install", (e) => {
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e.waitUntil(
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caches
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.open(SHELL)
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.then((c) => c.add("/"))
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.catch(() => {}),
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);
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self.skipWaiting();
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});
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self.addEventListener("activate", (e) => {
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e.waitUntil(
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caches
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.keys()
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.then((keys) => Promise.all(keys.filter((k) => k !== SHELL).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", (e) => {
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const req = e.request;
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// Only handle top-level navigations; let everything else (API, assets) pass through.
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if (req.mode !== "navigate") return;
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e.respondWith(
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fetch(req).catch(() => caches.match("/").then((r) => r || Response.error())),
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);
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});
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