diff --git a/src/index.tsx b/src/index.tsx index 836dfa75..505403fb 100644 --- a/src/index.tsx +++ b/src/index.tsx @@ -3,7 +3,6 @@ import { render } from 'react-dom'; import { Provider } from 'react-redux'; import { BrowserRouter } from 'react-router-dom'; import { homepage } from '../package.json'; -import registerServiceWorker from './registerServiceWorker'; import container from './container'; import store from './container/store'; import { fixLeafletIcons } from './utils/helpers/leaflet'; @@ -30,4 +29,3 @@ render( , document.getElementById('root'), ); -registerServiceWorker(); diff --git a/src/registerServiceWorker.js b/src/registerServiceWorker.js deleted file mode 100644 index f12df500..00000000 --- a/src/registerServiceWorker.js +++ /dev/null @@ -1,126 +0,0 @@ -/* eslint-disable @typescript-eslint/promise-function-async, @typescript-eslint/no-misused-promises */ - -// In production, we register a service worker to serve assets from local cache. - -// 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. - -// 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. - -/* eslint no-console: "off" */ - -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}$/, - ), -); - -export default function register() { - if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) { - // The URL constructor is available in all browsers that support SW. - const publicUrl = new URL(process.env.PUBLIC_URL, window.location); - - if (publicUrl.origin !== window.location.origin) { - // Our service worker won't work if PUBLIC_URL is on a different origin - // from what our page is served on. This might happen if a CDN is used to - // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374 - return; - } - - window.addEventListener('load', () => { - const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; - - if (isLocalhost) { - // This is running on localhost. Lets check if a service worker still exists or not. - checkValidServiceWorker(swUrl); - - // Add some additional logging to localhost, pointing developers to the - // service worker/PWA documentation. - return navigator.serviceWorker.ready.then(() => { - console.log( - 'This web app is being served cache-first by a service ' + - 'worker. To learn more, visit https://goo.gl/SC7cgQ', - ); - }); - } - - // Is not local host. Just register service worker - return registerValidSW(swUrl); - }); - } -} - -function registerValidSW(swUrl) { - return 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) => { - const NOT_FOUND_STATUS = 404; - - // Ensure service worker exists, and that we really are getting a JS file. - if ( - response.status === NOT_FOUND_STATUS || - response.headers.get('content-type').includes('javascript') - ) { - // No service worker found. Probably a different app. Reload the page. - return navigator.serviceWorker.ready.then((registration) => - registration.unregister().then(() => { - window.location.reload(); - })); - } - - // Service worker found. Proceed as normal. - return 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(); - }).catch(() => {}); - } -}