From 0b2cff3348c9024380814e177d55a78daf90d1ae Mon Sep 17 00:00:00 2001 From: Bastian Meissner Date: Wed, 6 Apr 2022 12:13:54 +0200 Subject: [PATCH] Remove serviceworker --- src/index.tsx | 6 -- src/serviceWorker.ts | 146 ------------------------------------------- 2 files changed, 152 deletions(-) delete mode 100644 src/serviceWorker.ts diff --git a/src/index.tsx b/src/index.tsx index 673525c..54924c2 100644 --- a/src/index.tsx +++ b/src/index.tsx @@ -1,7 +1,6 @@ import React from "react"; import ReactDOM from "react-dom"; import App from "./app"; -import * as serviceWorker from "./serviceWorker"; ReactDOM.render( @@ -9,8 +8,3 @@ ReactDOM.render( , document.getElementById("root"), ); - -// If you want your app to work offline and load faster, you can change -// unregister() to register() below. Note this comes with some pitfalls. -// Learn more about service workers: https://bit.ly/CRA-PWA -serviceWorker.unregister(); diff --git a/src/serviceWorker.ts b/src/serviceWorker.ts deleted file mode 100644 index d8e0ee5..0000000 --- a/src/serviceWorker.ts +++ /dev/null @@ -1,146 +0,0 @@ -// This optional code is used to register a service worker. -// register() is not called by default. - -// 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 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. - -// To learn more about the benefits of this model and instructions on how to -// opt-in, read https://bit.ly/CRA-PWA - -const isLocalhost = Boolean( - window.location.hostname === "localhost" || - // [::1] is the IPv6 localhost address. - window.location.hostname === "[::1]" || - // 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}$/, - ), -); - -type Config = { - onSuccess?: (registration: ServiceWorkerRegistration) => void; - onUpdate?: (registration: ServiceWorkerRegistration) => void; -}; - -export function register(config?: Config) { - if (process.env.NODE_ENV === "production" && "serviceWorker" in navigator) { - // The URL constructor is available in all browsers that support SW. - const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href); - if (publicUrl.origin !== window.location.origin) { - // Our service worker won't work if PUBLIC_URL is on a different origin - // from what our page is served on. This might happen if a CDN is used to - // serve assets; see https://github.com/facebook/create-react-app/issues/2374 - return; - } - - window.addEventListener("load", () => { - const swUrl = `${process.env.PUBLIC_URL}/service-worker.js`; - - if (isLocalhost) { - // This is running on localhost. Let's check if a service worker still exists or not. - checkValidServiceWorker(swUrl, config); - - // 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://bit.ly/CRA-PWA", - ); - }); - } else { - // Is not localhost. Just register service worker - registerValidSW(swUrl, config); - } - }); - } -} - -function registerValidSW(swUrl: string, config?: Config) { - navigator.serviceWorker - .register(swUrl) - .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 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://bit.ly/CRA-PWA.", - ); - - // 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."); - - // Execute callback - if (config && config.onSuccess) { - config.onSuccess(registration); - } - } - } - }; - }; - }) - .catch((error) => { - console.error("Error during service worker registration:", error); - }); -} - -function checkValidServiceWorker(swUrl: string, config?: Config) { - // Check if the service worker can be found. If it can't reload the page. - 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 || - (contentType != null && contentType.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, config); - } - }) - .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((error) => { - console.error(error.message); - }); - } -}