import { OnChanges, ElementRef } from "@angular/core";
import * as i0 from "@angular/core";
export declare class SmoothHeightDirective implements OnChanges {
    private element;
    smoothHeight: any;
    pulse: boolean;
    startHeight: number;
    constructor(element: ElementRef);
    get grow(): {
        value: boolean;
        params: {
            startHeight: number;
        };
    };
    setStartHeight(): void;
    ngOnChanges(): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<SmoothHeightDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<SmoothHeightDirective, "[smoothHeight]", never, { "smoothHeight": "smoothHeight"; }, {}, never>;
}