diff options
Diffstat (limited to 'src/registerServiceWorker.js')
| -rw-r--r-- | src/registerServiceWorker.js | 154 |
1 files changed, 77 insertions, 77 deletions
diff --git a/src/registerServiceWorker.js b/src/registerServiceWorker.js index c7ecf951..0fe89a23 100644 --- a/src/registerServiceWorker.js +++ b/src/registerServiceWorker.js @@ -9,100 +9,100 @@ // This link also includes instructions on opting out of this behavior. const isLocalhost = Boolean( - window.location.hostname === 'localhost' || + window.location.hostname === "localhost" || // [::1] is the IPv6 localhost address. - window.location.hostname === '[::1]' || + window.location.hostname === "[::1]" || // 127.0.0.1/8 is considered localhost for IPv4. window.location.hostname.match( - /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ + /^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/ ) ); export default function register() { - if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { - // The URL constructor is available in all browsers that support SW. - const publicUrl = new URL(process.env.PUBLIC_URL, window.location); - if (publicUrl.origin !== window.location.origin) { - // Our service worker won't work if PUBLIC_URL is on a different origin - // from what our page is served on. This might happen if a CDN is used to - // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374 - return; - } + if (process.env.NODE_ENV === "production" && "serviceWorker" in navigator) { + // The URL constructor is available in all browsers that support SW. + const publicUrl = new URL(process.env.PUBLIC_URL, window.location); + if (publicUrl.origin !== window.location.origin) { + // Our service worker won't work if PUBLIC_URL is on a different origin + // from what our page is served on. This might happen if a CDN is used to + // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374 + return; + } - window.addEventListener('load', () => { - const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; + window.addEventListener("load", () => { + const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; - if (!isLocalhost) { - // Is not local host. Just register service worker - registerValidSW(swUrl); - } else { - // This is running on localhost. Lets check if a service worker still exists or not. - checkValidServiceWorker(swUrl); - } - }); - } + if (!isLocalhost) { + // Is not local host. Just register service worker + registerValidSW(swUrl); + } else { + // This is running on localhost. Lets check if a service worker still exists or not. + checkValidServiceWorker(swUrl); + } + }); + } } function registerValidSW(swUrl) { - navigator.serviceWorker - .register(swUrl) - .then(registration => { - registration.onupdatefound = () => { - const installingWorker = registration.installing; - installingWorker.onstatechange = () => { - if (installingWorker.state === 'installed') { - if (navigator.serviceWorker.controller) { - // At this point, the old content will have been purged and - // the fresh content will have been added to the cache. - // It's the perfect time to display a "New content is - // available; please refresh." message in your web app. - console.log('New content is available; please refresh.'); - } else { - // At this point, everything has been precached. - // It's the perfect time to display a - // "Content is cached for offline use." message. - console.log('Content is cached for offline use.'); - } - } - }; - }; - }) - .catch(error => { - console.error('Error during service worker registration:', error); - }); + navigator.serviceWorker + .register(swUrl) + .then(registration => { + registration.onupdatefound = () => { + const installingWorker = registration.installing; + installingWorker.onstatechange = () => { + if (installingWorker.state === "installed") { + if (navigator.serviceWorker.controller) { + // At this point, the old content will have been purged and + // the fresh content will have been added to the cache. + // It's the perfect time to display a "New content is + // available; please refresh." message in your web app. + console.log("New content is available; please refresh."); + } else { + // At this point, everything has been precached. + // It's the perfect time to display a + // "Content is cached for offline use." message. + console.log("Content is cached for offline use."); + } + } + }; + }; + }) + .catch(error => { + console.error("Error during service worker registration:", error); + }); } function checkValidServiceWorker(swUrl) { - // Check if the service worker can be found. If it can't reload the page. - fetch(swUrl) - .then(response => { - // Ensure service worker exists, and that we really are getting a JS file. - if ( - response.status === 404 || - response.headers.get('content-type').indexOf('javascript') === -1 - ) { - // No service worker found. Probably a different app. Reload the page. - navigator.serviceWorker.ready.then(registration => { - registration.unregister().then(() => { - window.location.reload(); - }); - }); - } else { - // Service worker found. Proceed as normal. - registerValidSW(swUrl); - } - }) - .catch(() => { - console.log( - 'No internet connection found. App is running in offline mode.' - ); + // Check if the service worker can be found. If it can't reload the page. + fetch(swUrl) + .then(response => { + // Ensure service worker exists, and that we really are getting a JS file. + if ( + response.status === 404 || + response.headers.get("content-type").indexOf("javascript") === -1 + ) { + // No service worker found. Probably a different app. Reload the page. + navigator.serviceWorker.ready.then(registration => { + registration.unregister().then(() => { + window.location.reload(); + }); }); + } else { + // Service worker found. Proceed as normal. + registerValidSW(swUrl); + } + }) + .catch(() => { + console.log( + "No internet connection found. App is running in offline mode." + ); + }); } export function unregister() { - if ('serviceWorker' in navigator) { - navigator.serviceWorker.ready.then(registration => { - registration.unregister(); - }); - } + if ("serviceWorker" in navigator) { + navigator.serviceWorker.ready.then(registration => { + registration.unregister(); + }); + } } |