import { ErrorHandler, OnDestroy } from '@angular/core';
import { Observable } from 'rxjs';
import { AuthConfig } from './auth-config';
import { AuthEvent } from './auth-event';
import { AuthService } from './auth.service';
import * as i0 from "@angular/core";
/**
 * Send authentication session events to your functions app api
 */
export declare class AuthEventPersistenceService implements OnDestroy {
    private config;
    private subscription;
    private saves$;
    constructor(authService: AuthService, errorHandler: ErrorHandler, config: AuthConfig);
    /**
     * Start listening to the events to send them to the api
     */
    start(): void;
    /**
     * Send the event to the api. The default implementation is send event using the `navigator.sendBeacon`
     */
    protected sendEvent(evt: AuthEvent): Observable<void>;
    /**
     * Override this method if you need to modify the data sent to the api.
     *
     * Note: the the cookie containing all the `ClientPrincipal` fields will be available also to the api function
     *
     */
    protected prepareEventPayload(evt: AuthEvent): any;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<AuthEventPersistenceService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AuthEventPersistenceService>;
}