@firebase/auth-types

User Authentication Types

Defines types for user objects in Firebase Authentication, helping developers manage user data such as display names and email addresses safely.

import { User } from '@firebase/auth-types';

function getUserDetails(user: User) {
  console.log(user.displayName);
  console.log(user.email);
}

Authentication Service Types

Provides type definitions for the FirebaseAuth service, which includes properties and methods for initializing and configuring the authentication service.

import { FirebaseAuth } from '@firebase/auth-types';

function initializeAuth(auth: FirebaseAuth) {
  console.log(auth.app.name);
}

Auth Credential Types

Includes type definitions for authentication credentials, which are used when signing in a user or linking/unlinking auth providers.

import { AuthCredential } from '@firebase/auth-types';

function authenticateUser(credential: AuthCredential) {
  console.log(credential.providerId);
}