call method createUserWithEmailAndPassword without doing signIn

Question

In my system I need to create users from an authenticated user, but for this I need to create a user through the createUserWithEmailAndPassword method and when I create the user through this method the authentication status changes to the user that was created at the moment.

Is there a way to create users from an authenticated user without making signIn for the user created after it was created by the createUserWithEmailAndPassword method?

I have a system developed in Angular + Node.js

  createUser(user: Usuario): Promise<firebase.auth.UserCredential> {
    return this._angularFireAuth.auth.createUserWithEmailAndPassword(user.email, user.password);
  }

Answer 1

[ANSWER]

You can create a new Firebase App context in your client and then call createUserWithEmailAndPassword() again. This will not be re-authenticate to the the new user created. Reference.

var authApp = firebase.initializeApp({
// ...
}, 'authApp');
var detachedAuth = authApp.auth();

detachedAuth.createUserWithEmailAndPassword('foo@example.com', 'asuperrandompassword');

Potential Problem when doing this is: Firebase App named '[DEFAULT]' already exists (app/duplicate-app).

[OTHER SCENARIO (for others references)]

I assume you meant either one of these:

1. You want the signed-in user to keep signed-in even after closing the browser. If this is the case, you could use the persistence provide by the firebase auth.

2. You want to hide your sign-in button when the user state change from "not signed-in" to "signed-in". Then you can check this post.

3. Other reference: How to keep user logged in with Firebase no matter what?

Hope it helps!

Answer 2

After create user, you need call the signInWithEmailAndPassword sign in.

    signInFirebaseWithEmailAndPassword(
       userName: string,
       password: string
    ): Promise<firebase.auth.UserCredential> {
       return this._angularFireAuth.auth.signInWithEmailAndPassword(userName, password);
    }

Answer 3

Sounds like an administrator function. See Introduction to the Admin Auth API

User Management

It is not always convenient to have to visit the Firebase console in order to manage your Firebase users. The admin user management API provides programmatic access to those same users. It even allows you to do things the Firebase console cannot, such as retrieving a user's full data and changing a user's password, email address or phone number.

Answer 4

You have to create a new app instance for signing up purpose, because when you use the existing app instance to sign up, the current user is automatically signed out, and the new user is signed in, therefore to prevent the current user from signing out, a new app instance is needed. The advantage of the following method is you can use the existing firebase configuration file in environment file. initializeApp() function uses the following method signature; hence you have to use a different name for the new instance. When you don't use a name, the name is "[DEFAULT]". Once the user is signed up, you can safely delete the app instance.

initializeApp ( options :  Object ,  name ? :  string ) : App

---

async signup(username: string, password: string): Promise<void | Observable<never>>  { 

    const firebaseApp: firebase.app.App = firebase.initializeApp(environment.firebaseConfig, 'signupInstance');

    firebaseApp.auth().createUserWithEmailAndPassword(email, password)
    .then((user: auth.UserCredential) => {
      // use user here. 

      firebaseApp.delete();

    }, (error) => {
      firebaseApp.delete();
      return throwError(error);
    });
  }