All 5 Progressive Web Apps (PWA) with Angular questions
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Why might a company choose to build a Progressive Web App instead of a separate native mobile app? What is a service worker, and what role does it play in making an Angular app work offline? What is a web app manifest file, and what does it control for a Progressive Web App? How would you notify users when a new version of your Angular PWA is available and prompt them to refresh?
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Angular › Progressive Web Apps (PWA) with Angular

What is a Progressive Web App, and how do you add PWA support to an existing Angular project?

Beginner

Answer

A Progressive Web App is a website that behaves more like a native app, capable of working offline, being installed on a device's home screen, and loading quickly even on unreliable networks. Angular provides an official schematic that adds everything needed for basic PWA support with a single command.
ng add @angular/pwa

// This automatically adds a service worker, a web manifest file,
// and the necessary configuration to make your app installable and work offline
Real-world example A news website adds PWA support to their existing Angular app with a single CLI command, letting readers install it on their phone's home screen and continue reading previously loaded articles even without an internet connection.

Common follow-ups: What files does the ng add @angular/pwa command actually create or modify?;Does adding PWA support require rewriting any existing application code?

Build Environments & Deployment;Angular CLI & Project Structure
All 5 Progressive Web Apps (PWA) with Angular questions