How to track PWA opening?

Question

JavaScript

There is a PWA, and I need to understand when the user opens it (exactly from the phone screen already)
How to do this?

Answer 1

I wanted to answer that when installing on the home screen, events occur
https://github.com/w3c/manifest/issues/699
but it turned out that there is now a simple media query for this, see
https://stackoverflow.com/a/51735941
(I haven't tried it so I don't know how it works)

if (window.matchMedia('(display-mode: standalone)').matches) {  
    // do things here  
    // set a variable to be used when calling something  
    // e.g. call Google Analytics to track standalone use   
}