base-app | help jumpstart a new Rails 4 app | Functional Testing library

I'm trying to setup up web notifications with FCM and I get error messages when trying to register the service worker.

My structure is as follows:

domain.com/notification/index.html

domain.com/notification/test-worker.js

Index.html:

I have added android:exported="true" to my only activity in manifest but still getting below error after updating compile sdk and target sdk version to 31.I also tried rebuilding the project , invalidating cache and restart but that didn't helped

Error- Apps targeting Android 12 and higher are required to specify an explicit value for android:exported when the corresponding component has an intent filter defined. See https://developer.android.com/guide/topics/manifest/activity-element#exported for details.

I greated a very simple angular app (only shows a home page, and have attempted to deploy to Firebase hosting as shown in the several videos on the subject. It all seems to be working normally when i run it locally with ng serve, and I get output from firebase deploy that looks like this:

Previously I getting this No Firebase App '[DEFAULT]' has been created error when trying to copy the code from my previous Flutter project, which required me to import firebase_core and run Firebase.initializeApp() before runApp().

Unfortunately I getting below errors when trying to properly follow the installation instruction here https://pub.dev/packages/firebase_core, caused by unresolvable references on these two lines

import 'package:firebase_core_example/firebase_config.dart'

FirebaseApp app = await Firebase.initializeApp(options : DefaultFirebaseConfig.platformOptions)

So I wonder where that firebase_core_example and it's DefaultFirebaseConfig class actually came from because I can't find anywhere from pub.dev. Surely the default settings should be allowed because all the required informations has already been included in android/app/google-services.json file. I don't think I need to hardcode it again in Dart file.

I am trying to hook CDN based firebase libs for one of my project and as per the doc its doable https://firebase.google.com/docs/web/alt-setup

But when i put below html/js code

I'm trying to get a unique key from the push function but whenever I call it I get this error: Uncaught TypeError: postsRef.push is not a function at HTMLFormElement. These are my imports:

I am working on a weird kind of site where I only need to send forms to firestore and save pdf files to firestorage. Not even running any server-side code, just html and JS on the final client. My organization will only give an apache server path to run html, CSS and JS. Later I'll need to read but I'm the only user with read access so it's not a big deal because I will run that locally on my node.js CLI.

But I am looking forward to make my code as safe and efficient as possible even tho I have no idea what I'm doing 60% of the time.

Reading the docs and code online I realized that I am not doing unsubscribe() when I do my onAuthStateChanged(). By searching about memory leaks on JS I found a guy saying that if I meant to keep something live up in memory then I shouldn't unsubscribe from it. But as I said, I have no idea what I am doing.

Here is some of my .js and my login.html I am worried about 4 things, here I go:

1. should I unsubscribe() after my sign-in-out onAuthStateChanged ends? if so, where?
2. is it ok to set all this code inside window.onload ?
3. Should I split this code into modules so I can re-use the initializeApp() and other repetitive code or it is not recommendable since I am using CDN to import the firebase modules instead of using the import sentence.
4. Am I supposed to do the initializeApp() on every single one of my html pages? or doing it once on the login and forcing the user to login via vanilla JS will be the way to go?

...

I have a capacitor app and I'm trying to implement the Firebase Distribution with Gradle (https://firebase.google.com/docs/app-distribution/android/distribute-gradle?authuser=1&apptype=aab) but I'm stuck at this error:

I'm creating a sign up form using firebase auth and realtime database.

Here is the basic layout of the form (without CSS).