import { ElementRef, EventEmitter, NgZone, OnDestroy, OnInit } from '@angular/core';
import * as i0 from "@angular/core";
/**
 * Monitors host element's **scrolled** and **scrollable** state.
 */
export declare class ScrollMonitorDirective implements OnInit, OnDestroy {
    private elementRef;
    private ngZone;
    scrolled: boolean;
    scrollable: boolean;
    change: EventEmitter<{
        scrollable: boolean;
        scrolled: boolean;
    }>;
    private resizeObserver?;
    private subscription?;
    constructor(elementRef: ElementRef, ngZone: NgZone);
    ngOnInit(): void;
    ngOnDestroy(): void;
    private update;
    static ɵfac: i0.ɵɵFactoryDeclaration<ScrollMonitorDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ScrollMonitorDirective, "[spScrollMonitor]", ["spScrollMonitor"], {}, { "change": "spScrollMonitor"; }, never, never, true, never>;
}