import type { DataTableV2ColumnDef } from '../../public.api.js';
/**
 * Extracts the column order as specified in a column definition.
 * Also saves all encounterd column groups an array.
 *
 * @param columns - column definition
 * @returns extracted column order and column groups
 */
export declare function extractColumnOrderAndGroups<T>(columns: DataTableV2ColumnDef<T>[]): {
    columnOrder: string[];
    columnGroups: string[][];
};
/**
 * Validates a passed column order. Removes duplicated and invalid ids, adds missing ids
 * and ensures child columns with the same parent are placed next to each other.
 *
 * @param columnOrder - column order to validate
 * @param columnOrderFromDefinition - column order as defined in the column definition (valid)
 * @param columnGroups - array of all column groups, each group is an arry of ids
 * @returns corrected, valid column order or null if the order was already valid
 */
export declare function validateColumnOrder(columnOrder: string[], columnOrderFromDefinition: string[], columnGroups: string[][]): string[] | null;