Difference between initializing Firebase app at Native vs JS side?

[TommyLeong]

Hello all. May I know if there're any differences between initializing Firebase app at Native vs JS side?

One thing I realized is the option config that is passed to (JS) initializeApp() and (Native iOS)configure() has slight different in terms of number of information.

Native side (iOS)

  if ([FIRApp defaultApp] == nil) {
    [FIRApp configure];
  }

JS Side

const iosConfig = {
    clientId: 'xx',
    appId: 'xx',
    apiKey: 'xx',
    databaseURL: 'xx',
    storageBucket: 'xx',
    messagingSenderId: 'xx',
    projectId: 'xx',
  };
firebase.initializeApp(iosConfig);

[mikehardy]

🤔

One thing I realized is the option config that is passed to (JS) initializeApp() and (Native iOS)configure() has slight different in terms of number of information.

Please be specific, do you instrument / output the options immediately before they are passed into the underlying firebase app construction? If not do so and highlight the differences so they may be investigated, then for each difference examine the default value to see if any "extra" item is just the default, meaning it is extra but unimportant

[mikehardy]

that is how I would investigate it. If there is a difference, then there is likely a difference in contents of data structure used to init. If there is a difference in contents on data structure used to init then each difference should be examined.

If this hypothesis is incorrect and there is no difference or the differences still reduce to both just being default value (whether explicitly configured or implicitly the default) then we will have to re-think. It could be an order of operations problem at that point

[TommyLeong]

Thanks for the input. If I were to continue investigate on this, my question is.. how do I examined the differences among all these different input? (I'm cluesless on what should be checked)

Perhaps a little irrelevant from my topic, to your knowledge .. do you think it's possible to have 2 SDKs (RNFirebase SDK & 3rd Party SDK) perform Firebase app init at the same time? Which caused Firebase Server to return different token on each app launch?

[mikehardy]

That sounds like a terrible idea, two things attempting to control firebase at the same time. I wouldn't contemplate it. For diagnosis I would reach right into node_modules, then because my objective-c skills are terrible I would search on stack-overflow or internet at large how to print data structures to console (I've done it before but have to re-check every time...) and then I would add code before init that prints out the options. Then I would compare them as I try the native or JS init

[TommyLeong]

I didn't get you, when you say "data structures", what exactly are you trying to find from the code?

[mikehardy]

I believe there is a FirebaseOptions object passed in to the iniitalizer. That is a data structure - an object holding data - and you can inspect it and log out all of it's contents prior to calling the API