export {};
export type VirtualScrollOptimization<T = any> = Pick<VirtualScrollProps<T>, 'list' | 'itemKey' | 'itemSize' | 'itemEmptySize' | 'itemNested' | 'itemFocusable' | 'itemExpand'>;
export interface VirtualScrollRef<T> {
    scrollToItem: (el: HTMLElement, key: React.Key) => T | undefined;
    scrollToStep: (el: HTMLElement, step: 1 | -1) => T | undefined;
    scrollToNested: (el: HTMLElement) => T | undefined;
    scrollToStart: (el: HTMLElement) => T | undefined;
    scrollToEnd: (el: HTMLElement) => T | undefined;
}
export interface VirtualScrollProps<T> {
    ref?: React.Ref<VirtualScrollRef<T>>;
    children: (vsList: React.ReactNode, onScroll: React.UIEventHandler<HTMLElement>) => React.ReactElement | null;
    enable?: boolean;
    list: T[];
    listSize: number;
    listPadding: number | [number, number];
    itemKey: (item: T) => React.Key;
    itemRender: (item: T, index: number, props: {
        'aria-level': number;
        'aria-setsize': number;
        'aria-posinset': number;
    }, ancestry: T[], children?: React.ReactNode) => React.ReactNode;
    itemSize: number | ((item: T) => number);
    itemEmptySize?: number | ((item: T) => number);
    itemNested?: (item: T) => T[] | undefined;
    itemEmptyRender?: (item: T) => React.ReactNode;
    itemExpand?: (item: T) => boolean | undefined;
    itemFocusable?: boolean | ((item: T) => boolean);
    itemFocused?: React.Key;
    itemInAriaSetsize?: boolean | ((item: T) => boolean);
    placeholder: string;
    horizontal?: boolean;
    onScrollEnd?: () => void;
}