import { ColumnDef } from './index';
declare type ColumnDefHeader = ColumnDef & {
    colSpan?: number;
    rowSpan?: number;
};
export declare function getHeaders(columns: ColumnDef[]): ColumnDefHeader[][];
export declare function getColumns(columns: ColumnDef[]): ColumnDef<any>[];
export declare function getDepth(columns: ColumnDef[] | undefined): number;
export declare function getWidth(column: ColumnDef): number;
export declare function isNil(obj: any): boolean;
export declare function merge(...objects: any[]): object;
export {};