This is an Ionic app that demonstrate how to build an offline map with Angular and Leaflet and make it an installable PWA.

There is a blog describing how to build this app step by step.

https://pazel.dev/ionic-angular-leaflet-pwa-offline-maps-part-1

You need to have a Node LTS and Ionic CLI installed.

https://ionicframework.com/docs/intro/cli

https://nodejs.org/en/

Clone the project

 git clone https://github.com/pazel-io/ionic-angular-leaflet-offline-map-pwa.git

Go to the project directory

 cd ionic-angular-leaflet-offline-map-pwa

Install dependencies

 npm install

Start the server

 ionic serve

To build

 ionic build

To test PWA you can use npm serve package after having a successfull build. https://www.npmjs.com/package/serve

serve build -p 8100