From 50324149a8cb6baa0d86d07f635d65547339d937 Mon Sep 17 00:00:00 2001
From: James Hawkins <jhawki2005@gmail.com>
Date: Thu, 15 Jul 2021 22:43:38 +0100
Subject: [PATCH] Delete serviceWorkerRegistration.js

---
 src/serviceWorkerRegistration.js | 119 -------------------------------
 1 file changed, 119 deletions(-)
 delete mode 100644 src/serviceWorkerRegistration.js

diff --git a/src/serviceWorkerRegistration.js b/src/serviceWorkerRegistration.js
deleted file mode 100644
index a96b00d5..00000000
--- a/src/serviceWorkerRegistration.js
+++ /dev/null
@@ -1,119 +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://cra.link/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}$/)
-);
-
-export function register(config) {
-    if ('serviceWorker' in navigator) {
-        // The URL constructor is available in all browsers that support SW.
-        const publicUrl = new URL(process.env.PUBLIC_URL, window.location.href);
-
-        if (publicUrl.origin !== window.location.origin) {
-            return;
-        }
-
-        window.addEventListener('load', () => {
-            const swUrl = `${publicUrl}service-worker.js`;
-            
-            if (isLocalhost) {
-                checkValidServiceWorker(swUrl, config);
-            } else {
-                // Is not localhost. Just register service worker
-                registerValidSW(swUrl, config);
-            }
-        });
-    }
-}
-
-function registerValidSW(swUrl, 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.
-
-                            // 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.
-
-                            // Execute callback
-                            if (config && config.onSuccess) {
-                                config.onSuccess(registration);
-                            }
-                        }
-                    }
-                };
-            };
-        })
-        .catch((error) => {
-            console.error('Error during service worker registration:', error);
-        });
-}
-
-function checkValidServiceWorker(swUrl, 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(() => {
-        });
-}
-
-export function unregister() {
-    if ('serviceWorker' in navigator) {
-        navigator.serviceWorker.ready
-            .then((registration) => {
-                registration.unregister();
-            })
-            .catch((error) => {
-                console.error(error.message);
-            });
-    }
-}