https://validateidea.ai/service-worker.js

1function hostStartWithValidProtocol(requestUrl){
2    return (requestUrl.indexOf('http') === 0);
3}
4
5function webwaveApplicationNonCacheUrls(requestUrl){
6    return (requestUrl.indexOf('gui/fileUpload') !== -1
7        || requestUrl.indexOf('gui/saveAndPublishService') !== -1
8        || requestUrl.indexOf('webmasterPanel/exportWebsite') !== -1
9        || requestUrl.indexOf('administration/') !== -1
10        || requestUrl.indexOf('webmasterPanel/getWebsiteAccounts') !== -1
11        || requestUrl.indexOf('tawk.to') !== -1
12        || requestUrl.match(/\.(mp4)$/) !== null);
13}
14
15function hostIsValidUrl(requestUrl){
16    if (hostStartWithValidProtocol(requestUrl)){
17        return webwaveApplicationNonCacheUrls(requestUrl) === false;
18    }
19    return false;
20}
21
22self.addEventListener('install', event => {
23    //force new service worker when one is waiting
24    self.skipWaiting();
25    event.waitUntil(
26        caches.open('v1').then(cache => {
27            return cache.addAll(['/manifest.json']);
28        }, error => {
29            console.log(`Installation failed with error: ${error}`);
30        }),
31    );
32});
33
34self.addEventListener('activate', event => {

35    let cacheKeepList = ['v1'];
36    event.waitUntil(
37        caches.keys().then(keyList => {
38            return Promise.all(keyList.map(function (key){
39                if (cacheKeepList.indexOf(key) === -1){
40                    return caches.delete(key);
41                }
42            }));
43        }),
44    );
45});
46
47self.addEventListener('fetch', function (event){
48    if (hostIsValidUrl(event.request.url) === false){
49        return;
50    }
51    event.respondWith(
52        // Try the network
53        fetch(event.request)
54            .then(function (res){
55                return caches.open('v1')
56                    .then(function (cache){
57                        // Put in cache if succeeds
58                        cache.put(event.request.url, res.clone());
59                        return res;
60                    });
61            })
62            .catch(function (err){
63                // Fallback to cache
64                return caches.match(event.request);
65            }),
66    );
67});