export declare function scrollPositionByPage(
 itemSizes: number[],
 pageSize: number,
 scrollPosition: number,
 pages: number
): number;
export declare function scrollPositionByItem(
 itemSizes: number[],
 pageSize: number,
 scrollPosition: number,
 index: number,
 scrollLogicalPosition: 'start' | 'nearest'
): number;