69 lines
1.7 KiB
JavaScript
69 lines
1.7 KiB
JavaScript
const CACHE_NAME = "nowhatever-v1";
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const PRECACHE_URLS = ["/", "/offline"];
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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_NAME)
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.then((cache) => cache.addAll(PRECACHE_URLS))
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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 !== CACHE_NAME)
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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 { request } = event;
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if (request.method !== "GET") return;
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const url = new URL(request.url);
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// API calls: network-only
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if (url.pathname.startsWith("/api/")) return;
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// Static assets (_next/static, icons, fonts): cache-first
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if (
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url.pathname.startsWith("/_next/static/") ||
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url.pathname.match(/\.(png|jpg|svg|ico|woff2?)$/)
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) {
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event.respondWith(
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caches.match(request).then(
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(cached) =>
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cached ||
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fetch(request).then((response) => {
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const clone = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
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return response;
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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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// HTML pages: network-first, fallback to cache, then offline page
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event.respondWith(
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fetch(request)
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.then((response) => {
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const clone = response.clone();
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caches.open(CACHE_NAME).then((cache) => cache.put(request, clone));
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return response;
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})
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.catch(() => caches.match(request).then((cached) => cached || caches.match("/offline")))
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);
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});
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