I'm a newbie in React and I was wondering what is the purpose of registerServiceWorker() in the following code?  import React from 'react'; import ReactDOM from 'react-dom'; import App from './App'; import registerServiceW...
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In app.js,  I am checking the serviceWorker existence in navigator object and if available then registering the SW.  if ('serviceWorker' in navigator) {     navigator.serviceWorker.register('./service-worker.js', { scope: './'...
I'm testing Progressive Web App in IOS 11.3.  My pwa has a Facebook social login button that, when clicked, points to an external link (different windows.location).  The problem is that the pwa opens safari app to show external links instead of u...
What I am trying to achieve:   render page with loader/spinner if service-worker.js is registered and active, then check for updates   if no updates, then remove loader if updatefound and new version installed, then reload the page  else register ser...
Most examples of saving an 'app shell' show the process from a service worker. However I noticed that you can also access the caches object from the window.   So my question is, can I save pages for offline from the a page itself, and if so,...
I'm trying to subscribe to PushManager to send push notification, but I'm always getting an error when calling subscribe.  This is my subscribe call  registration.pushManager.subscribe({ userVisibleOnly: true })   .then(function (subscription...
Looks like Service Worker runs in a worker context and has no access to the DOM. However, once Service Worker installed, I want my users to know that the app will now work offline. How can I do that?...
I have a simple service worker, that adds two resources (index.html, app.js) to the cache (on install), deletes old caches (on activate) and serves the resources from cache if present, else from the network (on fetch). To get the new service worker r...
I'm trying to run a Web Application that sends push notifications when the window is inactive. To do this, I have a Service Worker that helps receives notifications from my php server (through Firebase).   However, I'm unsure how to check if...

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