import { GenericObject } from "@mongez/reinforcements";
import { Pipeline } from "./pipeline";
export declare class GroupByPipeline extends Pipeline {
    protected readonly _id: string | null | GenericObject | string[];
    protected groupByData: GenericObject;
    /**
     * Constructor
     */
    constructor(_id: string | null | GenericObject | string[], groupByData?: GenericObject);
}
export declare function groupByPipeline(column: string | null | GenericObject, groupByData: Record<string, any>): GroupByPipeline;
//# sourceMappingURL=GroupByPipeline.d.ts.map