import { OnDestroy } from '@angular/core';
import { BreakpointObserver } from '@angular/cdk/layout';
import { Subject } from 'rxjs';
import * as i0 from "@angular/core";
export declare class CalendarViewPortService implements OnDestroy {
    private breakpointObserver;
    destroyed: Subject<void>;
    viewport: Subject<string>;
    currentScreenSize?: string;
    constructor(breakpointObserver: BreakpointObserver);
    viewportResize(): void;
    ngOnDestroy(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<CalendarViewPortService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<CalendarViewPortService>;
}