-
Notifications
You must be signed in to change notification settings - Fork 43
/
service-worker.mjs
130 lines (119 loc) · 3.98 KB
/
service-worker.mjs
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
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
/**
* Copyright 2018 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
**/
import {CacheableResponsePlugin} from 'workbox-cacheable-response';
import {CacheFirst, StaleWhileRevalidate} from 'workbox-strategies';
import {cleanupOutdatedCaches, matchPrecache, precacheAndRoute}
from 'workbox-precaching';
import {clientsClaim} from 'workbox-core';
import {ExpirationPlugin} from 'workbox-expiration';
import {registerRoute} from 'workbox-routing';
import {strategy as streamsStrategy} from 'workbox-streams';
import {renderToStream} from '@popeindustries/lit-html-server';
import {API_CACHE_NAME, DEFAULT_TAG, DEFAULT_SORT} from './lib/constants.mjs';
import * as templates from './lib/templates.mjs';
import * as urls from './lib/urls.mjs';
import partials from './lib/partials.mjs';
import {initialize as pbsInitialize} from './lib/periodic-background-sync.mjs';
import routeMatchers from './lib/route-matchers.mjs';
precacheAndRoute(self.__WB_MANIFEST);
cleanupOutdatedCaches();
const apiStrategy = new StaleWhileRevalidate({
cacheName: API_CACHE_NAME,
plugins: [
new ExpirationPlugin({maxEntries: 50}),
],
});
registerRoute(
routeMatchers.get('about'),
streamsStrategy([
() => matchPrecache(partials.head),
() => matchPrecache(partials.navbar),
() => matchPrecache(partials.about),
() => matchPrecache(partials.foot),
]),
);
registerRoute(
routeMatchers.get('questions'),
streamsStrategy([
() => matchPrecache(partials.head),
() => matchPrecache(partials.navbar),
async ({event, params}) => {
try {
const questionId = params[1];
const questionResponse = await apiStrategy.handle({
event,
request: urls.getQuestion(questionId),
});
const data = await questionResponse.json();
return renderToStream(templates.question(data.items[0]));
} catch (error) {
return renderToStream(templates.error(error.message));
}
},
() => matchPrecache(partials.foot),
]),
);
registerRoute(
routeMatchers.get('index'),
streamsStrategy([
() => matchPrecache(partials.head),
() => matchPrecache(partials.navbar),
async ({event, url}) => {
try {
const sort = url.searchParams.get('sort') || DEFAULT_SORT;
const tag = url.searchParams.get('tag') || DEFAULT_TAG;
const listResponse = await apiStrategy.handle({
event,
request: urls.listQuestionsForTag(tag, sort),
});
const data = await listResponse.json();
return renderToStream(templates.index(tag, data.items, sort));
} catch (error) {
return renderToStream(templates.error(error.message));
}
},
() => matchPrecache(partials.foot),
]),
);
// Gravatar images support CORS, so we won't be storing opaque responses.
registerRoute(
({url}) => url.origin === 'https://www.gravatar.com',
new CacheFirst({
cacheName: 'profile-images',
plugins: [
new ExpirationPlugin({
maxEntries: 50,
purgeOnQuotaError: true,
}),
],
}),
);
registerRoute(
({request}) => request.destination === 'image',
new CacheFirst({
cacheName: 'other-images',
plugins: [
new CacheableResponsePlugin({statuses: [0, 200]}),
new ExpirationPlugin({
maxEntries: 10,
purgeOnQuotaError: true,
}),
],
}),
);
self.skipWaiting();
clientsClaim();
pbsInitialize();