import { PropsWithChildren, CSSProperties } from "react";
declare type Props = PropsWithChildren<{
    /** 每个元素高 */
    itemHeight: number;
    /** 一行几个元素 */
    columnNumber?: number;
    /** 可视范围里几个元素 */
    insightNumber: number;
    /** 滚动到第一个元素的高度 */
    startHeight?: number;
    /** 有滚动条的dom */
    scrollDom: HTMLDivElement | null;
    /** 扩展行数*/
    scaleRow?: number;
    /** 装载完成回调函数*/
    onloadFunc?: () => void;
    /** 节流函数的延迟 */
    delay?: number;
    /** virtual-custom-item的额外样式 */
    style?: CSSProperties;
    /** 设置滚动条高度的误差调整 */
    scrollbar?: number;
}>;
export declare function throttle(fn: Function, delay: number): (this: Function, ...args: Array<any>) => void;
declare function VirtualList(props: Props): JSX.Element;
declare namespace VirtualList {
    var defaultProps: {
        scaleRow: number;
        delay: number;
        columnNumber: number;
        startHeight: number;
    };
}
export default VirtualList;