Interface GoogleSignInAccount

interface GoogleSignInAccount {
    displayName: null | string;
    email: null | string;
    familyName: null | string;
    givenName: null | string;
    grantedScopes: string[];
    id: null | string;
    idToken: null | string;
    isExpired: boolean;
    photoUrl: null | string;
    serverAuthCode: null | string;
}