471a9daaa6
SW cache-first rewrite, React.lazy code splitting, PWA types/test stubs, install prompt, offline banner, offline queue, ChatPanel wiring. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
88 lines
3.3 KiB
JavaScript
88 lines
3.3 KiB
JavaScript
const CACHE_NAME = "nexus-v1";
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const PRECACHE_URLS = ["/", "/index.html"];
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const STATIC_EXTENSION_RE = /\.(js|css|woff2?|png|svg|ico|webmanifest)$/;
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// ── Install ──────────────────────────────────────────────────────────────────
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self.addEventListener("install", (event) => {
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self.skipWaiting();
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event.waitUntil(
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caches.open(CACHE_NAME).then((cache) => cache.addAll(PRECACHE_URLS))
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);
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});
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// ── Activate ─────────────────────────────────────────────────────────────────
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// Delete all caches except nexus-v1 (removes any stale caches from prior versions).
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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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// ── Fetch ─────────────────────────────────────────────────────────────────────
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self.addEventListener("fetch", (event) => {
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const { request } = event;
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const url = new URL(request.url);
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// API calls — network only, no interception
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if (url.pathname.startsWith("/api")) {
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return;
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}
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// Navigation requests — cache-first: serve shell from cache, fall back to network
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if (request.mode === "navigate") {
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event.respondWith(
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caches.match("/").then((cached) => cached || fetch(request))
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);
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return;
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}
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// Static assets — cache-first: serve from cache, on miss fetch and cache
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if (STATIC_EXTENSION_RE.test(url.pathname)) {
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event.respondWith(
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caches.match(request).then((cached) => {
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if (cached) return cached;
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return fetch(request).then((response) => {
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if (response.ok) {
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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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}
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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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// All other requests — pass through, no interception
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});
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// ── Push Notifications ────────────────────────────────────────────────────────
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self.addEventListener("push", (event) => {
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const data = event.data ? event.data.json() : {};
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const { title = "Nexus", body = "", icon, data: notifData } = data;
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event.waitUntil(
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self.registration.showNotification(title, {
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body,
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icon: icon || "/android-chrome-192x192.png",
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badge: "/favicon-32x32.png",
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data: notifData,
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})
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);
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});
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// ── Notification Click ────────────────────────────────────────────────────────
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self.addEventListener("notificationclick", (event) => {
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event.notification.close();
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const targetUrl = event.notification.data?.url || "/";
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event.waitUntil(clients.openWindow(targetUrl));
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});
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