65 lines
1.5 KiB
JavaScript
65 lines
1.5 KiB
JavaScript
// Minimal service worker for the AtomCMS-Next PWA. Cache-first for immutable
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// static assets, network-first for navigations (with a cached fallback so the
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// shell still loads offline). Bump CACHE to invalidate.
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const CACHE = "atom-v1";
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self.addEventListener("install", () => {
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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
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.keys()
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.then((keys) =>
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Promise.all(
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keys.filter((k) => k !== CACHE).map((k) => caches.delete(k)),
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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 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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// Cache-first for immutable static assets.
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if (
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url.pathname.startsWith("/assets/") ||
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url.pathname.startsWith("/_next/static/")
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) {
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event.respondWith(
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caches.open(CACHE).then((cache) =>
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cache.match(req).then(
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(hit) =>
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hit ||
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fetch(req).then((res) => {
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if (res.ok) cache.put(req, res.clone());
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return res;
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}),
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),
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),
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);
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return;
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}
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// Network-first for page navigations; fall back to cache, then the shell.
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if (req.mode === "navigate") {
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event.respondWith(
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fetch(req)
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.then((res) => {
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const copy = res.clone();
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caches
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.open(CACHE)
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.then((c) => c.put(req, copy))
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.catch(() => {});
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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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});
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