|
11 | 11 | // opt-in, read https://bit.ly/CRA-PWA
|
12 | 12 |
|
13 | 13 | const isLocalhost = Boolean(
|
14 |
| - window.location.hostname === 'localhost' || |
15 |
| - // [::1] is the IPv6 localhost address. |
16 |
| - window.location.hostname === '[::1]' || |
17 |
| - // 127.0.0.1/8 is considered localhost for IPv4. |
18 |
| - window.location.hostname.match( |
19 |
| - /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ |
20 |
| - ) |
| 14 | + window.location.hostname === 'localhost' || |
| 15 | + // [::1] is the IPv6 localhost address. |
| 16 | + window.location.hostname === '[::1]' || |
| 17 | + // 127.0.0.1/8 is considered localhost for IPv4. |
| 18 | + window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/) |
21 | 19 | );
|
22 | 20 |
|
23 | 21 | export function register(config) {
|
24 |
| - if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { |
25 |
| - // The URL constructor is available in all browsers that support SW. |
26 |
| - const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); |
27 |
| - if (publicUrl.origin !== window.location.origin) { |
28 |
| - // Our service worker won't work if PUBLIC_URL is on a different origin |
29 |
| - // from what our page is served on. This might happen if a CDN is used to |
30 |
| - // serve assets; see https://github.com/facebook/create-react-app/issues/2374 |
31 |
| - return; |
32 |
| - } |
| 22 | + if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { |
| 23 | + // The URL constructor is available in all browsers that support SW. |
| 24 | + const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); |
| 25 | + if (publicUrl.origin !== window.location.origin) { |
| 26 | + // Our service worker won't work if PUBLIC_URL is on a different origin |
| 27 | + // from what our page is served on. This might happen if a CDN is used to |
| 28 | + // serve assets; see https://github.com/facebook/create-react-app/issues/2374 |
| 29 | + return; |
| 30 | + } |
33 | 31 |
|
34 |
| - window.addEventListener('load', () => { |
35 |
| - const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; |
| 32 | + window.addEventListener('load', () => { |
| 33 | + const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; |
36 | 34 |
|
37 |
| - if (isLocalhost) { |
38 |
| - // This is running on localhost. Let's check if a service worker still exists or not. |
39 |
| - checkValidServiceWorker(swUrl, config); |
| 35 | + if (isLocalhost) { |
| 36 | + // This is running on localhost. Let's check if a service worker still exists or not. |
| 37 | + checkValidServiceWorker(swUrl, config); |
40 | 38 |
|
41 |
| - // Add some additional logging to localhost, pointing developers to the |
42 |
| - // service worker/PWA documentation. |
43 |
| - navigator.serviceWorker.ready.then(() => { |
44 |
| - console.log( |
45 |
| - 'This web app is being served cache-first by a service ' + |
46 |
| - 'worker. To learn more, visit https://bit.ly/CRA-PWA' |
47 |
| - ); |
| 39 | + // Add some additional logging to localhost, pointing developers to the |
| 40 | + // service worker/PWA documentation. |
| 41 | + navigator.serviceWorker.ready.then(() => { |
| 42 | + console.log( |
| 43 | + 'This web app is being served cache-first by a service ' + |
| 44 | + 'worker. To learn more, visit https://bit.ly/CRA-PWA' |
| 45 | + ); |
| 46 | + }); |
| 47 | + } else { |
| 48 | + // Is not localhost. Just register service worker |
| 49 | + registerValidSW(swUrl, config); |
| 50 | + } |
48 | 51 | });
|
49 |
| - } else { |
50 |
| - // Is not localhost. Just register service worker |
51 |
| - registerValidSW(swUrl, config); |
52 |
| - } |
53 |
| - }); |
54 |
| - } |
| 52 | + } |
55 | 53 | }
|
56 | 54 |
|
57 | 55 | function registerValidSW(swUrl, config) {
|
58 |
| - navigator.serviceWorker |
59 |
| - .register(swUrl) |
60 |
| - .then(registration => { |
61 |
| - registration.onupdatefound = () => { |
62 |
| - const installingWorker = registration.installing; |
63 |
| - if (installingWorker == null) { |
64 |
| - return; |
65 |
| - } |
66 |
| - installingWorker.onstatechange = () => { |
67 |
| - if (installingWorker.state === 'installed') { |
68 |
| - if (navigator.serviceWorker.controller) { |
69 |
| - // At this point, the updated precached content has been fetched, |
70 |
| - // but the previous service worker will still serve the older |
71 |
| - // content until all client tabs are closed. |
72 |
| - console.log( |
73 |
| - 'New content is available and will be used when all ' + |
74 |
| - 'tabs for this page are closed. See https://bit.ly/CRA-PWA.' |
75 |
| - ); |
| 56 | + navigator.serviceWorker |
| 57 | + .register(swUrl) |
| 58 | + .then(registration => { |
| 59 | + registration.onupdatefound = () => { |
| 60 | + const installingWorker = registration.installing; |
| 61 | + if (installingWorker == null) { |
| 62 | + return; |
| 63 | + } |
| 64 | + installingWorker.onstatechange = () => { |
| 65 | + if (installingWorker.state === 'installed') { |
| 66 | + if (navigator.serviceWorker.controller) { |
| 67 | + // At this point, the updated precached content has been fetched, |
| 68 | + // but the previous service worker will still serve the older |
| 69 | + // content until all client tabs are closed. |
| 70 | + console.log( |
| 71 | + 'New content is available and will be used when all ' + |
| 72 | + 'tabs for this page are closed. See https://bit.ly/CRA-PWA.' |
| 73 | + ); |
76 | 74 |
|
77 |
| - // Execute callback |
78 |
| - if (config && config.onUpdate) { |
79 |
| - config.onUpdate(registration); |
80 |
| - } |
81 |
| - } else { |
82 |
| - // At this point, everything has been precached. |
83 |
| - // It's the perfect time to display a |
84 |
| - // "Content is cached for offline use." message. |
85 |
| - console.log('Content is cached for offline use.'); |
| 75 | + // Execute callback |
| 76 | + if (config && config.onUpdate) { |
| 77 | + config.onUpdate(registration); |
| 78 | + } |
| 79 | + } else { |
| 80 | + // At this point, everything has been precached. |
| 81 | + // It's the perfect time to display a |
| 82 | + // "Content is cached for offline use." message. |
| 83 | + console.log('Content is cached for offline use.'); |
86 | 84 |
|
87 |
| - // Execute callback |
88 |
| - if (config && config.onSuccess) { |
89 |
| - config.onSuccess(registration); |
90 |
| - } |
91 |
| - } |
92 |
| - } |
93 |
| - }; |
94 |
| - }; |
95 |
| - }) |
96 |
| - .catch(error => { |
97 |
| - console.error('Error during service worker registration:', error); |
98 |
| - }); |
| 85 | + // Execute callback |
| 86 | + if (config && config.onSuccess) { |
| 87 | + config.onSuccess(registration); |
| 88 | + } |
| 89 | + } |
| 90 | + } |
| 91 | + }; |
| 92 | + }; |
| 93 | + }) |
| 94 | + .catch(error => { |
| 95 | + console.error('Error during service worker registration:', error); |
| 96 | + }); |
99 | 97 | }
|
100 | 98 |
|
101 | 99 | function checkValidServiceWorker(swUrl, config) {
|
102 |
| - // Check if the service worker can be found. If it can't reload the page. |
103 |
| - fetch(swUrl) |
104 |
| - .then(response => { |
105 |
| - // Ensure service worker exists, and that we really are getting a JS file. |
106 |
| - const contentType = response.headers.get('content-type'); |
107 |
| - if ( |
108 |
| - response.status === 404 || |
109 |
| - (contentType != null && contentType.indexOf('javascript') === -1) |
110 |
| - ) { |
111 |
| - // No service worker found. Probably a different app. Reload the page. |
112 |
| - navigator.serviceWorker.ready.then(registration => { |
113 |
| - registration.unregister().then(() => { |
114 |
| - window.location.reload(); |
115 |
| - }); |
| 100 | + // Check if the service worker can be found. If it can't reload the page. |
| 101 | + fetch(swUrl) |
| 102 | + .then(response => { |
| 103 | + // Ensure service worker exists, and that we really are getting a JS file. |
| 104 | + const contentType = response.headers.get('content-type'); |
| 105 | + if (response.status === 404 || (contentType != null && contentType.indexOf('javascript') === -1)) { |
| 106 | + // No service worker found. Probably a different app. Reload the page. |
| 107 | + navigator.serviceWorker.ready.then(registration => { |
| 108 | + registration.unregister().then(() => { |
| 109 | + window.location.reload(); |
| 110 | + }); |
| 111 | + }); |
| 112 | + } else { |
| 113 | + // Service worker found. Proceed as normal. |
| 114 | + registerValidSW(swUrl, config); |
| 115 | + } |
| 116 | + }) |
| 117 | + .catch(() => { |
| 118 | + console.log('No internet connection found. App is running in offline mode.'); |
116 | 119 | });
|
117 |
| - } else { |
118 |
| - // Service worker found. Proceed as normal. |
119 |
| - registerValidSW(swUrl, config); |
120 |
| - } |
121 |
| - }) |
122 |
| - .catch(() => { |
123 |
| - console.log( |
124 |
| - 'No internet connection found. App is running in offline mode.' |
125 |
| - ); |
126 |
| - }); |
127 | 120 | }
|
128 | 121 |
|
129 | 122 | export function unregister() {
|
130 |
| - if ('serviceWorker' in navigator) { |
131 |
| - navigator.serviceWorker.ready.then(registration => { |
132 |
| - registration.unregister(); |
133 |
| - }); |
134 |
| - } |
| 123 | + if ('serviceWorker' in navigator) { |
| 124 | + navigator.serviceWorker.ready.then(registration => { |
| 125 | + registration.unregister(); |
| 126 | + }); |
| 127 | + } |
135 | 128 | }
|
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