import { OnDestroy } from '@angular/core';
import { CdkVirtualScrollViewport } from '@angular/cdk/scrolling';
export declare class FangViewportAutoResizeDirective implements OnDestroy {
    private cdkVirtualScrollViewport;
    private resizeObserver;
    constructor(cdkVirtualScrollViewport: CdkVirtualScrollViewport);
    ngOnDestroy(): void;
}