import { Key } from 'react';
import { DataTableColumnsType, DataTableRenderExpandedRow, DataTableRowType, DataTableSelectableRows } from './types';
export interface UseTableColumnsProps<DataType> {
    columns: DataTableColumnsType<DataType>;
}
/**
 * 컬럼/그룹 컬럼을 평탄화해 colgroup 렌더용 `{ id?, width?, minWidth? }` 배열로 반환한다.
 * - 그룹 컬럼은 하위 컬럼으로 펼치고, 일반 컬럼은 그대로 매핑한다.
 */
export declare function getColGroup<DataType>({ columns, }: UseTableColumnsProps<DataType>): Array<{
    id?: string;
    width?: number;
    minWidth?: number;
}>;
export declare function getGroupColumns<DataType>({ columns }: UseTableColumnsProps<DataType>): DataTableColumnsType<DataType>;
export declare function getFlattenColumns<DataType>({ columns, }: UseTableColumnsProps<DataType>): DataTableColumnsType<DataType>;
interface GetTotalColumnCountProps<DataType> extends UseTableColumnsProps<DataType> {
    selectableRows?: DataTableSelectableRows<DataType>;
    expandableButton?: boolean;
    renderExpandedRow?: DataTableRenderExpandedRow<DataType>;
}
export declare function getTotalColumnCount<DataType>({ columns, selectableRows, expandableButton, renderExpandedRow, }: GetTotalColumnCountProps<DataType>): number;
export declare function getFixedMergeColumn<DataType>(columns: DataTableColumnsType<DataType>, selectableRows: boolean, columnCount: number, renderExpandedRow: boolean): number;
export declare function defaultRowSelectionKeyExtractor(row: DataTableRowType<unknown>): Key;
export declare function defaultRowKeyExtractor(row: DataTableRowType<unknown>, rowIndex: number): Key;
export {};