blob: e20102a35ce25535f339ec514e1bc2e2096cc818 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
const get_cache_info = async() => {
const response = await fetch('/cache.json')
return response.json()
}
self.addEventListener('install', async event => {
const precache = async() => {
const ver = await get_cache_info()
const cache = await self.caches.open(ver.store);
return cache.addAll(ver.default)
}
event.waitUntil(precache())
})
self.addEventListener('activate', async event => {
const invalidatecache = async() => {
const ver = await get_cache_info()
const keys = await self.caches.keys()
Promise.all(
keys.map(key => {
if (key !== ver.store) {
return self.caches.delete(key)
}
}))
}
event.waitUntil(invalidatecache())
})
self.addEventListener('fetch', async event => {
const cache_fetch = async() => {
const ver = await get_cache_info()
if (event.request.method != 'GET') {
return
}
const cacheres = await self.caches.match(event.request)
if (cacheres !== undefined) {
return cacheres
}
try {
const response = await self.fetch(event.request)
const cache = await self.caches.open(ver.store)
cache.put(event.request, response.clone())
return response
} catch {
return self.caches.match(ver.offline)
}
}
event.respondWith(cache_fetch())
})
|
