FirebaseCore import?

[Raymond W.]

At this link:

https://github.com/firebase/quickstart-ios/blob/master/authentication/AuthenticationExample/ViewControllers/AccountLinkingViewController.swift

FirebaseCore is imported into the class. Why? Is it necessary?

[Raymond W.]

I also noticed that the class has the following code:

/// Designated initializer requires a valid, non-nil Firebase user.
   /// - Parameter user: An instance of a Firebase `User`.
    init(for user: User) {
        
        self.user = user
        super.init(nibName: nil, bundle: nil)
    }

Why is this code needed? I have never seen it explained before?

[Morgan Chen]

The user is required to display information about the account. Depending on your own code, you may or may not put it in the designated initializer's parameters.

The FirebaseCore import is redundant due to the FirebaseAuth import.