import { Overlay } from '@angular/cdk/overlay';
import { Injector } from '@angular/core';
import { ToastConfig } from './types';
import * as i0 from "@angular/core";
export declare class ToastService {
    private _overlayService;
    private _injector;
    private _currentToast;
    constructor(_overlayService: Overlay, _injector: Injector);
    open(messageKey: string, title?: string, titleKey?: string, style?: string): void;
    open(config: ToastConfig): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<ToastService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<ToastService>;
}