text: ﻿const CACHE_VERSION = '{#CACHE_VERSION#}'
  
  // Caution! Be sure you understand the caveats before publishing an application with
  // offline support. See https://aka.ms/blazor-offline-considerations
  
  self.importScripts('./service-worker-assets.js');
  self.addEventListener('install', event => event.waitUntil(onInstall(event)));
  self.addEventListener('activate', event => event.waitUntil(onActivate(event)));
  self.addEventListener('fetch', event => event.respondWith(onFetch(event)));
  
  const cacheNamePrefix = 'offline-cache-';
  const cacheName = `${cacheNamePrefix}${self.assetsManifest.version}${CACHE_VERSION}`;
  const offlineAssetsInclude = [ /\.dll$/, /\.pdb$/, /\.wasm/, /\.html/, /\.js$/, /\.json$/, /\.css$/, /\.woff$/, /\.png$/, /\.jpe?g$/, /\.gif$/, /\.ico$/, /\.blat$/, /\.dat$/ ];
  const offlineAssetsExclude = [/^service-worker\.js$/, /^security\.txt$/ ];
  
  async function onInstall(event) {
      console.info('Service worker: Install');
  
      // Fetch and cache all matching items from the assets manifest
      const assetsRequests = self.assetsManifest.assets
          .filter(asset => offlineAssetsInclude.some(pattern => pattern.test(asset.url)))
          .filter(asset => !offlineAssetsExclude.some(pattern => pattern.test(asset.url)))
          .map(asset => new Request(asset.url, { integrity: asset.hash, cache: 'no-cache' }));
      await caches.open(cacheName).then(cache => cache.addAll(assetsRequests));
  }
  
  async function onActivate(event) {
      console.info('Service worker: Activate');
  
      // Delete unused caches
      const cacheKeys = await caches.keys();
      await Promise.all(cacheKeys
          .filter(key => key.startsWith(cacheNamePrefix) && key !== cacheName)
          .map(key => caches.delete(key)));
  }
  
  async function onFetch(event) {
      let cachedResponse = null;
      if (event.request.method === 'GET') {
          // For all navigation requests, try to serve index.html from cache
          // If you need some URLs to be server-rendered, edit the following check to exclude those URLs
          const shouldServeIndexHtml = event.request.mode === 'navigate';
  
          const request = shouldServeIndexHtml ? 'index.html' : event.request;
          const cache = await caches.open(cacheName);
          cachedResponse = await cache.match(request);
      }
  
      return cachedResponse || fetch(event.request);
  }
  
  