export { PanDomainAuthentication } from './panda';
export declare const gracePeriodInMillis: number;
interface Result {
    success: boolean;
}
interface Success extends Result {
    success: true;
    shouldRefreshCredentials: boolean;
    user: User;
}
interface Failure extends Result {
    success: false;
    reason: string;
}
export interface FreshSuccess extends Success {
    shouldRefreshCredentials: false;
}
export interface StaleSuccess extends Success {
    shouldRefreshCredentials: true;
    mustRefreshByEpochTimeMillis: number;
}
export interface UserValidationFailure extends Failure {
    reason: 'invalid-user';
    user: User;
}
export interface CookieFailure extends Failure {
    reason: 'no-cookie' | 'invalid-cookie' | 'expired-cookie';
}
export interface UnknownFailure extends Failure {
    reason: 'unknown';
}
export type AuthenticationResult = FreshSuccess | StaleSuccess | CookieFailure | UserValidationFailure | UnknownFailure;
export interface User {
    firstName: string;
    lastName: string;
    email: string;
    avatarUrl?: string;
    authenticatingSystem: string;
    authenticatedIn: string[];
    expires: number;
    multifactor: boolean;
}
export type ValidateUserFn = (user: User) => boolean;
export declare function guardianValidation(user: User): boolean;