import React from 'react';
import { ScrollVisibleButtonProps, ScrollVisibleButtonRef } from './ScrollVisibleButton';
/**
 * BackTop 组件属性
 */
export interface BackTopProps extends ScrollVisibleButtonProps {
    /** 滚动到顶部的持续时间 @default 450 */
    duration?: number;
}
export declare const BackTop: React.MemoExoticComponent<React.ForwardRefExoticComponent<BackTopProps & React.RefAttributes<ScrollVisibleButtonRef>>>;
