import { ObjectForExtending } from '../types';

export declare function isAtBottom({ event: { currentTarget, target }, scrollThreshold, }: {
    event: React.UIEvent<HTMLElement>;
    scrollThreshold: number | undefined;
}): boolean;
export declare const SKELETON_ROW_KEY = "skeletonXXXXXXXXX";
export declare const SKELETON_CELLS_KEY = "SKELETON_CELLS_XXXXXXXXX";
export declare const SKELETON_ROW: {
    readonly skeletonXXXXXXXXX: true;
};
export type SkeletonCells = Set<string>;
export declare const addSkeletonToCellInRow: <RowType extends ObjectForExtending = ObjectForExtending>(row: RowType, columnKeyForSkeleton: string) => RowType & {
    SKELETON_CELLS_XXXXXXXXX: Set<string>;
};
export declare const deleteSkeletonCellFromRow: <RowType extends ObjectForExtending = ObjectForExtending>(row: RowType, columnKeyWithSkeleton: string) => RowType;
export declare const addSkeletonToRow: <RowType extends ObjectForExtending = ObjectForExtending>(row: RowType) => RowType & {
    skeletonXXXXXXXXX: boolean;
};
export declare const deleteSkeletonFromRow: <RowType extends ObjectForExtending = ObjectForExtending>(row: RowType) => RowType;