The convience observables provided by the Auth module are no longer type safe

Commencez par les observables pratiques documentés dans docs/auth.md et suivez l’importation rxfire/auth utilisée par le module Auth. Comparez la résolution avec le moduleResolution "bundler" du tsconfig.json d’Angular CLI 18 à celle de v17.1.0 et du commit Angular CLI lié ; le travail est considéré comme terminé lorsque les observables conservent leurs types attendus dans la configuration actuelle.

Version info

Angular CLI: 18.0.2
Node: 22.2.0
Package Manager: npm 10.8.0
OS: linux x64

Angular: 18.0.1
... animations, common, compiler, compiler-cli, core, fire
... forms, platform-browser, platform-browser-dynamic, router

Package Version

@angular-devkit/architect 0.1800.2
@angular-devkit/build-angular 18.0.2
@angular-devkit/core 18.0.2
@angular-devkit/schematics 18.0.2
@angular/cli 18.0.2
@schematics/angular 18.0.2
rxjs 7.8.1
typescript 5.4.5
zone.js 0.14.6

How to reproduce these conditions

Failing test unit, Stackblitz demonstrating the problem
n/a

Steps to set up and reproduce

• Create a new angular app using the latest version of the cli
  ng new angular18-firebase-test
• Add AngularFire
  ng add @angular/fire
• Follow the guidance here to add the convenience observables

Sample data and security rules
n/a

Debug output

** Output from firebase.database().enableLogging(true); **
n/a

** Screenshots **

Expected behavior

The convenience observables should be properly typed as they were in v17.1.0
Note in this screenshot how the IDE properly recognizes the types when using the previous release:

Actual behavior

The observables are cast as any (see screenshot).

Edit 1
Upon further investigation, it appears the problem is related to how the rxfire/auth module in this file is imported. Following the import through to the definition of the module takes me to a type definition file in v17 but instead goes to an esm module in v18. See related screenshot here:

Still unsure why this is happening.

Edit 2
Eureka! It appears in this commit the AngularCLI now defaults to setting the moduleResolution compiler option in the tsconfig.json file to "bundler" by default thus causing the module to get resolved differently. Switching back to the value of "node" allows for the proper import of typed entities but likely causes problems with the areas targeted in that aforementioned commit.