From 21b62ea3fd1f26fd5a9cd2afdf9b7609c55177e4 Mon Sep 17 00:00:00 2001
From: Tao Bojlen <tao@btao.org>
Date: Tue, 4 Sep 2018 18:53:17 +0200
Subject: [PATCH] remove service worker

---
 frontend/src/index.tsx                |   2 -
 frontend/src/registerServiceWorker.ts | 123 --------------------------
 2 files changed, 125 deletions(-)
 delete mode 100644 frontend/src/registerServiceWorker.ts

diff --git a/frontend/src/index.tsx b/frontend/src/index.tsx
index cfb66f5..c85ff17 100644
--- a/frontend/src/index.tsx
+++ b/frontend/src/index.tsx
@@ -14,7 +14,6 @@ import { FocusStyleManager } from '@blueprintjs/core';
 
 import { App } from './App';
 import { rootReducer } from './redux/reducers';
-import registerServiceWorker from './registerServiceWorker';
 
 // https://blueprintjs.com/docs/#core/accessibility.focus-management
 FocusStyleManager.onlyShowFocusOnTabs();
@@ -32,4 +31,3 @@ ReactDOM.render(
   </Provider>,
   document.getElementById('root') as HTMLElement
 );
-registerServiceWorker();
diff --git a/frontend/src/registerServiceWorker.ts b/frontend/src/registerServiceWorker.ts
deleted file mode 100644
index 28c89f7..0000000
--- a/frontend/src/registerServiceWorker.ts
+++ /dev/null
@@ -1,123 +0,0 @@
-// tslint:disable:no-console
-// 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.
-
-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}$/
-    )
-);
-
-export default function register() {
-  if (process.env.NODE_ENV === 'production' && 'serviceWorker' in navigator) {
-    // The URL constructor is available in all browsers that support SW.
-    const publicUrl = new URL(
-      process.env.PUBLIC_URL!,
-      window.location.toString()
-    );
-    if (publicUrl.origin !== window.location.origin) {
-      // Our service worker won't work if PUBLIC_URL is on a different origin
-      // from what our page is served on. This might happen if a CDN is used to
-      // serve assets; see https://github.com/facebookincubator/create-react-app/issues/2374
-      return;
-    }
-
-    window.addEventListener('load', () => {
-      const swUrl = `${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.
-        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'
-          );
-        });
-      } else {
-        // Is not local host. Just register service worker
-        registerValidSW(swUrl);
-      }
-    });
-  }
-}
-
-function registerValidSW(swUrl: string) {
-  navigator.serviceWorker
-    .register(swUrl)
-    .then(registration => {
-      registration.onupdatefound = () => {
-        const installingWorker = registration.installing;
-        if (installingWorker) {
-          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: string) {
-  // Check if the service worker can be found. If it can't reload the page.
-  fetch(swUrl)
-    .then(response => {
-      // Ensure service worker exists, and that we really are getting a JS file.
-      if (
-        response.status === 404 ||
-        response.headers.get('content-type')!.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);
-      }
-    })
-    .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();
-    });
-  }
-}