https://ustefana.pl/sw.js

1
2const CACHENAME =  'eShop-Cache-V1';
3const DYNAMICCACHE = 'eShop-Dynamic-Cache-V1';
4const FILELIST = ['css/img/offline.jpg', './?offline=true'];
5
6self.addEventListener('install', function(e){
7    e.waitUntil(
8        caches.open(CACHENAME).then(function(cache){
9            return cache.addAll(FILELIST);
10        })
11    );
12});
13
14self.addEventListener('activate', function(e){
15    e.waitUntil(
16        caches.keys().then(function(keyList){
17            return Promise.all(keyList.map(function(key){
18                if(key !== CACHENAME){
19                    return caches.delete(key);
20                }
21            }));
22        })
23    );
24    return self.clients.claim();
25});
26
27self.addEventListener('fetch', function(e){
28    if(e.request.url.includes("facebook")){ }
29    else if (e.request.method !== 'GET') {
30        return;
31    } else {
32        e.respondWith(
33            fetch(e.request).then(function(res){
34                return caches.open(DYNAMICCACHE).then(function(cache){
35                    cache.put(e.request.url, res.clone());
36                    return res;
37                })
38            }).catch(function(err){
39                return caches.match(e.request).then(function(response){
40                    if(response){
41                        return response;
42                    } else {
43                        return caches.match('./?offline=true');
44                    }
45                });
46            })
47        );
48    }
49});