Home > @firebase/auth > AdditionalUserInfo

AdditionalUserInfo interface

A structure containing additional user information from a federated identity provider.

Signature:

export interface AdditionalUserInfo 

Properties

Property	Type	Description
isNewUser	boolean	Whether the user is new (created via sign-up) or existing (authenticated using sign-in).
profile	Record<string, unknown> | null	Map containing IDP-specific user data.
providerId	string | null	Identifier for the provider used to authenticate this user.
username?	string | null	(Optional) The username if the provider is GitHub or Twitter.