import { AfterViewInit, ElementRef } from '@angular/core';
import { DestroyableContainer } from '@ts-core/common';
export declare class AspectRatioResizeDirective extends DestroyableContainer implements AfterViewInit {
    protected static UPDATE_DELAY: number;
    private _ratio;
    private _direction;
    private sensor;
    private element;
    constructor(element: ElementRef);
    private commitResizeProperties;
    ngAfterViewInit(): void;
    destroy(): void;
    private get width();
    private set width(value);
    private get height();
    private set height(value);
    set direction(value: Direction);
    get direction(): Direction;
    set ratio(value: number);
    get ratio(): number;
}
export declare enum Direction {
    VERTICAL = "VERTICAL",
    HORIZONTAL = "HORIZONTAL"
}