import { ComponentFactoryResolver, ApplicationRef, Injector, ComponentRef } from '@angular/core';
import { AlertConfig } from './alert-config';
import { AlertRef } from './alert-ref';
import { TulAlertComponent } from '../components/tul-alert/tul-alert.component';
import * as i0 from "@angular/core";
export declare class AlertService {
    private componentFactoryResolver;
    private appRef;
    private injector;
    dialogComponentRef: ComponentRef<TulAlertComponent>;
    constructor(componentFactoryResolver: ComponentFactoryResolver, appRef: ApplicationRef, injector: Injector);
    /**
     * open alert on screen
     * @param config config for alert
     * @returns
     */
    open(config: AlertConfig): AlertRef;
    private appendDialogComponentToBody;
    private removeElementsByClass;
    private removeDialogComponentFromBody;
    static ɵfac: i0.ɵɵFactoryDeclaration<AlertService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<AlertService>;
}