\r\n )\r\n }\r\n}\r\n\r\nexport default App\r\n","// This optional code is used to register a service worker.\r\n// register() is not called by default.\r\n\r\n// This lets the app load faster on subsequent visits in production, and gives\r\n// it offline capabilities. However, it also means that developers (and users)\r\n// will only see deployed updates on subsequent visits to a page, after all the\r\n// existing tabs open on the page have been closed, since previously cached\r\n// resources are updated in the background.\r\n\r\n// To learn more about the benefits of this model and instructions on how to\r\n// opt-in, read https://bit.ly/CRA-PWA\r\n\r\nconst isLocalhost = Boolean(\r\n window.location.hostname === 'localhost'\r\n // [::1] is the IPv6 localhost address.\r\n || window.location.hostname === '[::1]'\r\n // 127.0.0.1/8 is considered localhost for IPv4.\r\n || window.location.hostname.match(\r\n /^127(?:\\.(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)){3}$/,\r\n ),\r\n)\r\n\r\nexport function register(config) {\r\n if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {\r\n // The URL constructor is available in all browsers that support SW.\r\n const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href)\r\n if (publicUrl.origin !== window.location.origin) {\r\n // Our service worker won't work if PUBLIC_URL is on a different origin\r\n // from what our page is served on. This might happen if a CDN is used to\r\n // serve assets; see https://github.com/facebook/create-react-app/issues/2374\r\n return\r\n }\r\n\r\n window.addEventListener('load', () => {\r\n const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`\r\n\r\n if (isLocalhost) {\r\n // This is running on localhost. Let's check if a service worker still exists or not.\r\n checkValidServiceWorker(swUrl, config)\r\n\r\n // Add some additional logging to localhost, pointing developers to the\r\n // service worker/PWA documentation.\r\n navigator.serviceWorker.ready.then(() => {\r\n console.log(\r\n 'This web app is being served cache-first by a service '\r\n + 'worker. To learn more, visit https://bit.ly/CRA-PWA',\r\n )\r\n })\r\n } else {\r\n // Is not localhost. Just register service worker\r\n registerValidSW(swUrl, config)\r\n }\r\n })\r\n }\r\n}\r\n\r\nfunction registerValidSW(swUrl, config) {\r\n navigator.serviceWorker\r\n .register(swUrl)\r\n .then(registration => {\r\n registration.onupdatefound = () => {\r\n const installingWorker = registration.installing\r\n if (installingWorker == null) {\r\n return\r\n }\r\n installingWorker.onstatechange = () => {\r\n if (installingWorker.state === 'installed') {\r\n if (navigator.serviceWorker.controller) {\r\n // At this point, the updated precached content has been fetched,\r\n // but the previous service worker will still serve the older\r\n // content until all client tabs are closed.\r\n console.log(\r\n 'New content is available and will be used when all '\r\n + 'tabs for this page are closed. See https://bit.ly/CRA-PWA.',\r\n )\r\n\r\n // Execute callback\r\n if (config && config.onUpdate) {\r\n config.onUpdate(registration)\r\n }\r\n } else {\r\n // At this point, everything has been precached.\r\n // It's the perfect time to display a\r\n // \"Content is cached for offline use.\" message.\r\n console.log('Content is cached for offline use.')\r\n\r\n // Execute callback\r\n if (config && config.onSuccess) {\r\n config.onSuccess(registration)\r\n }\r\n }\r\n }\r\n }\r\n }\r\n })\r\n .catch(error => {\r\n console.error('Error during service worker registration:', error)\r\n })\r\n}\r\n\r\nfunction checkValidServiceWorker(swUrl, config) {\r\n // Check if the service worker can be found. If it can't reload the page.\r\n fetch(swUrl)\r\n .then(response => {\r\n // Ensure service worker exists, and that we really are getting a JS file.\r\n const contentType = response.headers.get('content-type')\r\n if (\r\n response.status === 404\r\n || (contentType != null && contentType.indexOf('javascript') === -1)\r\n ) {\r\n // No service worker found. Probably a different app. Reload the page.\r\n navigator.serviceWorker.ready.then(registration => {\r\n registration.unregister().then(() => {\r\n window.location.reload()\r\n })\r\n })\r\n } else {\r\n // Service worker found. Proceed as normal.\r\n registerValidSW(swUrl, config)\r\n }\r\n })\r\n .catch(() => {\r\n console.log(\r\n 'No internet connection found. App is running in offline mode.',\r\n )\r\n })\r\n}\r\n\r\nexport function unregister() {\r\n if ('serviceWorker' in navigator) {\r\n navigator.serviceWorker.ready.then(registration => {\r\n registration.unregister()\r\n })\r\n }\r\n}\r\n","import React from 'react'\r\nimport ReactDOM from 'react-dom'\r\nimport './index.css'\r\nimport App from './App'\r\nimport * as serviceWorker from './serviceWorker'\r\n\r\nReactDOM.render(, document.getElementById('root'))\r\n\r\n// If you want your app to work offline and load faster, you can change\r\n// unregister() to register() below. Note this comes with some pitfalls.\r\n// Learn more about service workers: https://bit.ly/CRA-PWA\r\nserviceWorker.unregister()\r\n"],"sourceRoot":""}