72 lines
1.7 KiB
JavaScript
72 lines
1.7 KiB
JavaScript
const CACHE = 'sm-v1';
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const STATIC_ASSETS = [
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'/assets/css/style.css',
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'/assets/js/app.js',
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'/assets/js/main.js',
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'/assets/img/server.svg',
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'/assets/img/icon-192.png',
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'/assets/img/icon-512.png',
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'/manifest.json',
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'/offline',
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];
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self.addEventListener('install', function(e) {
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e.waitUntil(
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caches.open(CACHE).then(function(cache) {
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return cache.addAll(STATIC_ASSETS);
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}).then(function() {
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return self.skipWaiting();
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})
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);
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});
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self.addEventListener('activate', function(e) {
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e.waitUntil(
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caches.keys().then(function(keys) {
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return Promise.all(
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keys.filter(function(k) { return k !== CACHE; }).map(function(k) { return caches.delete(k); })
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);
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}).then(function() {
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return self.clients.claim();
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})
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);
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});
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self.addEventListener('fetch', function(e) {
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var url = new URL(e.request.url);
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if (url.pathname.startsWith('/api/')) {
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return;
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}
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if (
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url.pathname.startsWith('/assets/') ||
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url.pathname === '/manifest.json'
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) {
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e.respondWith(
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caches.open(CACHE).then(function(cache) {
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return cache.match(e.request).then(function(cached) {
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var fetchPromise = fetch(e.request).then(function(response) {
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cache.put(e.request, response.clone());
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return response;
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});
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return cached || fetchPromise;
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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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e.respondWith(
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fetch(e.request).catch(function() {
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return caches.match(e.request).then(function(cached) {
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if (cached) return cached;
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if (e.request.mode === 'navigate') {
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return caches.match('/offline');
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}
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return new Response('Offline', { status: 503 });
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});
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})
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);
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});
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