import { Overlay } from '@angular/cdk/overlay';
import { ViewContainerRef } from '@angular/core';
import { Observable } from 'rxjs';
import { YapI18nService } from '../../i18n/i18n.service';
import { YapSnackMessage } from './snack.interface';
import * as i0 from "@angular/core";
export declare const DEFAULT_MSG_TIMEOUT = 3000;
export declare const DELAY_FOR_HIDE = 200;
export declare const YAP_CUSTOMEVENT_TYPE = "@yap.snack";
export declare class YapSnackbarService {
    private overlay;
    private translate;
    rootViewContainer?: ViewContainerRef;
    static count: number;
    private overlayRef?;
    private messageEvents$;
    constructor(overlay: Overlay, translate: YapI18nService);
    setRootViewContainerRef(viewContainerRef: ViewContainerRef): void;
    open(message: YapSnackMessage): Observable<void> | null;
    static ɵfac: i0.ɵɵFactoryDeclaration<YapSnackbarService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<YapSnackbarService>;
}