63 lines
2.8 KiB
JavaScript
63 lines
2.8 KiB
JavaScript
// Caution! Be sure you understand the caveats before publishing an application with
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// offline support. See https://aka.ms/blazor-offline-considerations
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self.importScripts('./service-worker-assets.js');
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self.addEventListener('install', event => event.waitUntil(onInstall(event)));
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self.addEventListener('activate', event => event.waitUntil(onActivate(event)));
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self.addEventListener('fetch', event => event.respondWith(onFetch(event)));
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const cacheNamePrefix = 'offline-cache-';
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const cacheName = `${cacheNamePrefix}${self.assetsManifest.version}`;
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const offlineAssetsInclude = [/\.dll$/, /\.pdb$/, /\.wasm/, /\.html/, /\.js$/, /\.json$/, /\.css$/, /\.woff$/, /\.png$/, /\.jpe?g$/, /\.gif$/, /\.ico$/, /\.blat$/, /\.dat$/, /\.webmanifest$/];
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// ИСКЛЮЧАЕМ также service-worker-assets.js
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const offlineAssetsExclude = [/^service-worker\.js$/, /\/service-worker-assets\.js$/];
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const base = "/";
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const baseUrl = new URL(base, self.origin);
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const manifestUrlList = self.assetsManifest.assets.map(asset => new URL(asset.url, baseUrl).href);
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async function onInstall(event) {
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self.skipWaiting();
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const assetsRequests = self.assetsManifest.assets
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.filter(asset => offlineAssetsInclude.some(pattern => pattern.test(asset.url)))
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.filter(asset => !offlineAssetsExclude.some(pattern => pattern.test(asset.url)))
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.map(asset => new Request(asset.url, { integrity: asset.hash, cache: 'no-cache' }));
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await caches.open(cacheName).then(cache => cache.addAll(assetsRequests));
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}
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async function onActivate(event) {
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await self.clients.claim();
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// НОВОЕ: Уведомляем все открытые вкладки о том, что новый SW активирован
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const clientsList = await self.clients.matchAll();
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clientsList.forEach(client => {
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client.postMessage({ type: 'SW_ACTIVATED', version: self.assetsManifest.version });
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});
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// Delete unused caches
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const cacheKeys = await caches.keys();
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await Promise.all(cacheKeys
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.filter(key => key.startsWith(cacheNamePrefix) && key !== cacheName)
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.map(key => caches.delete(key)));
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}
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async function onFetch(event) {
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// НОВОЕ: никогда не перехватываем файлы Service Worker
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const url = event.request.url;
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if (url.includes('/service-worker.js') || url.includes('/service-worker-assets.js')) {
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return fetch(event.request);
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}
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let cachedResponse = null;
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if (event.request.method === 'GET') {
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const shouldServeIndexHtml = event.request.mode === 'navigate'
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&& !manifestUrlList.some(u => u === event.request.url);
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const request = shouldServeIndexHtml ? 'index.html' : event.request;
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const cache = await caches.open(cacheName);
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cachedResponse = await cache.match(request);
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}
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return cachedResponse || fetch(event.request);
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} |