import React from 'react';
export declare function smoothScrollTo(x: number, y: number): void;
export declare function getElementYPosition(elementRef: React.RefObject<HTMLDivElement>): number;
export declare function isInViewport(elementRef: React.RefObject<HTMLDivElement>): boolean;
export declare function getAdditonalGap(element: HTMLElement): 8 | 16;