sw.js

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return f}},"es_2020","es3");const OFFLINE_DATA_FILE="offline.json",CACHE_NAME_PREFIX="c3offline",BROADCASTCHANNEL_NAME="offline",CONSOLE_PREFIX="[SW] ",LAZYLOAD_KEYNAME="",broadcastChannel="undefined"===typeof BroadcastChannel?null:new BroadcastChannel(BROADCASTCHANNEL_NAME);function PostBroadcastMessage(a){broadcastChannel&&setTimeout(()=>broadcastChannel.postMessage(a),3E3)}function Broadcast(a){PostBroadcastMessage({type:a})}
function BroadcastDownloadingUpdate(a){PostBroadcastMessage({type:"downloading-update",version:a})}function BroadcastUpdateReady(a){PostBroadcastMessage({type:"update-ready",version:a})}function IsUrlInLazyLoadList(a,b){if(!b)return!1;try{for(const c of b)if((new RegExp(c)).test(a))return!0}catch(c){console.error(CONSOLE_PREFIX+"Error matching in lazy-load list: ",c)}return!1}
function WriteLazyLoadListToStorage(a){return"undefined"===typeof localforage?Promise.resolve():localforage.setItem(LAZYLOAD_KEYNAME,a)}function ReadLazyLoadListFromStorage(){return"undefined"===typeof localforage?Promise.resolve([]):localforage.getItem(LAZYLOAD_KEYNAME)}function GetCacheBaseName(){return CACHE_NAME_PREFIX+"-"+self.registration.scope}function GetCacheVersionName(a){return GetCacheBaseName()+"-v"+a}
async function GetAvailableCacheNames(){const a=await caches.keys(),b=GetCacheBaseName();return a.filter(a=>a.startsWith(b))}async function IsUpdatePending(){return 2<=(await GetAvailableCacheNames()).length}async function GetMainPageUrl(){var a=await clients.matchAll({includeUncontrolled:!0,type:"window"});for(const b of a)if(a=b.url,a.startsWith(self.registration.scope)&&(a=a.substring(self.registration.scope.length)),a&&"/"!==a)return a.startsWith("?")&&(a="/"+a),a;return""}
function fetchWithBypass(a,b){"string"===typeof a&&(a=new Request(a));return b?fetch(a.url,{headers:a.headers,mode:a.mode,credentials:a.credentials,redirect:a.redirect,cache:"no-store"}):fetch(a)}
async function CreateCacheFromFileList(a,b,c){const d=await Promise.all(b.map(a=>fetchWithBypass(a,c)));let e=!0;for(const a of d)a.ok||(e=!1,console.error(CONSOLE_PREFIX+"Error fetching '"+a.url+"' ("+a.status+" "+a.statusText+")"));if(!e)throw Error("not all resources were fetched successfully");const f=await caches.open(a);try{return await Promise.all(d.map((a,c)=>f.put(b[c],a)))}catch(g){throw console.error(CONSOLE_PREFIX+"Error writing cache entries: ",g),caches.delete(a),g;}}
async function UpdateCheck(a){try{const c=await fetchWithBypass(OFFLINE_DATA_FILE,!0);if(!c.ok)throw Error(OFFLINE_DATA_FILE+" responded with "+c.status+" "+c.statusText);const d=await c.json(),e=d.version,f=d.fileList,g=d.lazyLoad,h=GetCacheVersionName(e);if(await caches.has(h))await IsUpdatePending()?(console.log(CONSOLE_PREFIX+"Update pending"),Broadcast("update-pending")):(console.log(CONSOLE_PREFIX+"Up to date"),Broadcast("up-to-date"));else{var b=await GetMainPageUrl();f.unshift("./");b&&-1===
f.indexOf(b)&&f.unshift(b);console.log(CONSOLE_PREFIX+"Caching "+f.length+" files for offline use");a?Broadcast("downloading"):BroadcastDownloadingUpdate(e);g&&await WriteLazyLoadListToStorage(g);await CreateCacheFromFileList(h,f,!a);await IsUpdatePending()?(console.log(CONSOLE_PREFIX+"All resources saved, update ready"),BroadcastUpdateReady(e)):(console.log(CONSOLE_PREFIX+"All resources saved, offline support ready"),Broadcast("offline-ready"))}}catch(c){console.warn(CONSOLE_PREFIX+"Update check failed: ",
c)}}self.addEventListener("install",a=>{a.waitUntil(UpdateCheck(!0).catch(()=>null))});async function GetCacheNameToUse(a,b){if(1===a.length||!b||1<(await clients.matchAll()).length)return a[0];b=a[a.length-1];console.log(CONSOLE_PREFIX+"Updating to new version");await Promise.all(a.slice(0,-1).map(a=>caches.delete(a)));return b}
async function HandleFetch(a,b){var c=await GetAvailableCacheNames();if(!c.length)return fetch(a.request);b=await GetCacheNameToUse(c,b);b=await caches.open(b);if(c=await b.match(a.request))return c;c=await Promise.all([fetch(a.request),ReadLazyLoadListFromStorage()]);const d=c[0];if(IsUrlInLazyLoadList(a.request.url,c[1]))try{await b.put(a.request,d.clone())}catch(e){console.warn(CONSOLE_PREFIX+"Error caching '"+a.request.url+"': ",e)}return d}
self.addEventListener("fetch",a=>{if((new URL(a.request.url)).origin===location.origin){var b="navigate"===a.request.mode,c=HandleFetch(a,b);b&&a.waitUntil(c.then(()=>UpdateCheck(!1)));a.respondWith(c)}});