69678a9426
1. React.memo on WindowRenderer — prevents re-renders when parent state changes but no windows are affected 2. Coordinate display via direct DOM ref — no React state updates on mouse move (was triggering re-renders on every pixel) 3. useDeferredValue for sidebar vitals + player list — React prioritizes map interactions over stat text updates 4. Chat messages in ref — stores in useRef instead of useState, only bumps a version counter for re-render. Eliminates a new Map() allocation on every chat message. 5. Lazy-load 8 window components — InventoryWindow, CharacterWindow, RadarWindow, CombatStatsWindow, IssuesWindow, VitalSharingWindow, StatsWindow, CombatPickerWindow all loaded on first open. Main bundle dropped from 278KB to 211KB (24% reduction). 6. Preload critical assets — dereth.png, backpack icon, dungeon_tiles.json via <link rel="preload"> in index.html for instant map render. 7. Bundle splitting — React runtime extracted to separate 12KB chunk (cached independently). Window components split into 8 chunks. Total: 13 chunks vs previous 2. 8. Service worker — caches map images, icon sprites, and dungeon tiles. Icon images cached on first fetch. Repeat page loads serve from cache instantly. Auto-cleans old cache versions. Net result: - Initial load: 211KB main + 17KB CSS (was 278KB + 17KB) - React cached separately: 12KB - Windows load on demand: 1-15KB each - Dashboard with Recharts: 425KB (unchanged, still lazy) - Map images/icons: cached by service worker after first load Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
72 lines
2 KiB
JavaScript
72 lines
2 KiB
JavaScript
// Service worker for MosswartOverlord v2 — caches static assets for instant repeat loads
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const CACHE_NAME = 'mo-v2-cache-v1';
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const STATIC_ASSETS = [
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'/dereth.png',
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'/dereth_highres.png',
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'/prismatic-taper-icon.png',
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'/icons/0600127E.png',
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'/icons/06000133.png',
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'/icons/06001080.png',
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];
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self.addEventListener('install', (event) => {
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event.waitUntil(
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caches.open(CACHE_NAME).then(cache => cache.addAll(STATIC_ASSETS))
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);
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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.keys().then(keys =>
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Promise.all(keys.filter(k => k !== CACHE_NAME).map(k => caches.delete(k)))
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)
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);
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self.clients.claim();
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});
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self.addEventListener('fetch', (event) => {
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const url = new URL(event.request.url);
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// Cache icon images on first fetch
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if (url.pathname.startsWith('/icons/') && event.request.method === 'GET') {
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event.respondWith(
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caches.match(event.request).then(cached => {
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if (cached) return cached;
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return fetch(event.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(event.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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// Cache dungeon_tiles.json (large, rarely changes)
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if (url.pathname === '/dungeon_tiles.json') {
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event.respondWith(
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caches.match(event.request).then(cached => {
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if (cached) return cached;
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return fetch(event.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(event.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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// Cache static assets (map images etc)
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if (STATIC_ASSETS.some(a => url.pathname === a)) {
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event.respondWith(
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caches.match(event.request).then(cached => cached || fetch(event.request))
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);
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return;
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}
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});
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