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Update service worker code and disable (#183)
To avoid caching issues we are having with the service worker, disable it for now.
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Original file line number | Diff line number | Diff line change |
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@@ -1,108 +1,137 @@ | ||
// In production, we register a service worker to serve assets from local cache. | ||
// This optional code is used to register a service worker. | ||
// register() is not called by default. | ||
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// This lets the app load faster on subsequent visits in production, and gives | ||
// it offline capabilities. However, it also means that developers (and users) | ||
// will only see deployed updates on the "N+1" visit to a page, since previously | ||
// cached resources are updated in the background. | ||
// will only see deployed updates on subsequent visits to a page, after all the | ||
// existing tabs open on the page have been closed, since previously cached | ||
// resources are updated in the background. | ||
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// To learn more about the benefits of this model, read https://goo.gl/KwvDNy. | ||
// This link also includes instructions on opting out of this behavior. | ||
// To learn more about the benefits of this model and instructions on how to | ||
// opt-in, read https://cra.link/PWA | ||
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const isLocalhost = Boolean( | ||
window.location.hostname === 'localhost' || | ||
// [::1] is the IPv6 localhost address. | ||
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}$/ | ||
) | ||
// 127.0.0.0/8 are considered localhost for IPv4. | ||
window.location.hostname.match(/^127(?:\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/) | ||
); | ||
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export default function register() { | ||
export function register(config) { | ||
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); | ||
const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); | ||
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 | ||
// serve assets; see https://github.com/facebook/create-react-app/issues/2374 | ||
return; | ||
} | ||
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window.addEventListener('load', () => { | ||
const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; | ||
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if (!isLocalhost) { | ||
// Is not local host. Just register service worker | ||
registerValidSW(swUrl); | ||
if (isLocalhost) { | ||
// This is running on localhost. Let's check if a service worker still exists or not. | ||
checkValidServiceWorker(swUrl, config); | ||
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// Add some additional logging to localhost, pointing developers to the | ||
// service worker/PWA documentation. | ||
navigator.serviceWorker.ready.then(() => { | ||
console.log( | ||
'This web app is being served cache-first by a service ' + | ||
'worker. To learn more, visit https://cra.link/PWA' | ||
); | ||
}); | ||
} else { | ||
// This is running on localhost. Lets check if a service worker still exists or not. | ||
checkValidServiceWorker(swUrl); | ||
// Is not localhost. Just register service worker | ||
registerValidSW(swUrl, config); | ||
} | ||
}); | ||
} | ||
} | ||
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function registerValidSW(swUrl) { | ||
function registerValidSW(swUrl, config) { | ||
navigator.serviceWorker | ||
.register(swUrl) | ||
.then(registration => { | ||
.then((registration) => { | ||
registration.onupdatefound = () => { | ||
const installingWorker = registration.installing; | ||
if (installingWorker == null) { | ||
return; | ||
} | ||
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.'); | ||
// At this point, the updated precached content has been fetched, | ||
// but the previous service worker will still serve the older | ||
// content until all client tabs are closed. | ||
console.log( | ||
'New content is available and will be used when all ' + | ||
'tabs for this page are closed. See https://cra.link/PWA.' | ||
); | ||
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// Execute callback | ||
if (config && config.onUpdate) { | ||
config.onUpdate(registration); | ||
} | ||
} 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.'); | ||
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// Execute callback | ||
if (config && config.onSuccess) { | ||
config.onSuccess(registration); | ||
} | ||
} | ||
} | ||
}; | ||
}; | ||
}) | ||
.catch(error => { | ||
.catch((error) => { | ||
console.error('Error during service worker registration:', error); | ||
}); | ||
} | ||
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function checkValidServiceWorker(swUrl) { | ||
function checkValidServiceWorker(swUrl, config) { | ||
// Check if the service worker can be found. If it can't reload the page. | ||
fetch(swUrl) | ||
.then(response => { | ||
fetch(swUrl, { | ||
headers: { 'Service-Worker': 'script' }, | ||
}) | ||
.then((response) => { | ||
// Ensure service worker exists, and that we really are getting a JS file. | ||
const contentType = response.headers.get('content-type'); | ||
if ( | ||
response.status === 404 || | ||
response.headers.get('content-type').indexOf('javascript') === -1 | ||
(contentType != null && contentType.indexOf('javascript') === -1) | ||
) { | ||
// No service worker found. Probably a different app. Reload the page. | ||
navigator.serviceWorker.ready.then(registration => { | ||
navigator.serviceWorker.ready.then((registration) => { | ||
registration.unregister().then(() => { | ||
window.location.reload(); | ||
}); | ||
}); | ||
} else { | ||
// Service worker found. Proceed as normal. | ||
registerValidSW(swUrl); | ||
registerValidSW(swUrl, config); | ||
} | ||
}) | ||
.catch(() => { | ||
console.log( | ||
'No internet connection found. App is running in offline mode.' | ||
); | ||
console.log('No internet connection found. App is running in offline mode.'); | ||
}); | ||
} | ||
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export function unregister() { | ||
if ('serviceWorker' in navigator) { | ||
navigator.serviceWorker.ready.then(registration => { | ||
registration.unregister(); | ||
}); | ||
navigator.serviceWorker.ready | ||
.then((registration) => { | ||
registration.unregister(); | ||
}) | ||
.catch((error) => { | ||
console.error(error.message); | ||
}); | ||
} | ||
} |