import { ClientPrincipal } from './client-principal';
/**
 * Type names of the authentication session events
 */
export declare type AuthEventType = 'login' | 'sign-up' | 'logout' | 'purge';
/**
 * An extract of an `AuthEvent` that will sent to the function app api
 */
export interface AuthEventPayload {
    type: AuthEventType;
    userId: string;
    identityProvider: string;
}
/**
 * An authentication session event
 */
export declare abstract class AuthEvent {
    abstract type: AuthEventType;
    abstract user: ClientPrincipal;
    /**
     * Creates an event object representing the user having logged in
     * @param user The current user
     */
    static login(user: ClientPrincipal): AuthEvent;
    /**
     * Creates an event object representing the user having logged out
     * @param user The current user
     */
    static logout(user: ClientPrincipal): AuthEvent;
    /**
     * Creates an event object representing the user requesting to "forget me"
     * @param user The current user
     */
    static purge(user: ClientPrincipal): AuthEvent;
    /**
     * Creates an event object representing having signed up
     * @param user The current user
     */
    static signUp(user: ClientPrincipal): AuthEvent;
    /**
     * Prepare an {@link AuthEvent } payload to be sent to the api for persistence that has been sanitized for GDPR/PII
     *
     * @param evt the event to be sent to the api
     */
    static toAuthEventPayload(evt: AuthEvent): AuthEventPayload;
}