export interface GroupResult {
    key: any;
    name?: any;
    records: any[];
    indexes: number[];
    aggregates?: Record<string, any>;
}
export declare class Grouper {
    keys: any[];
    nameGetter?: any;
    dataGetter: any;
    aggregates?: any;
    groups: any;
    constructor(key: any, aggregates?: any, dataGetter?: any, nameGetter?: any);
    reset(): void;
    initGroup(leaf: boolean): {
        records?: undefined;
        indexes?: undefined;
        aggregates?: undefined;
    } | {
        records: never[];
        indexes: never[];
        aggregates: any;
    };
    process(record: any, index: number): void;
    processAll(records: any[], indexes?: number[]): void;
    report(g: any, path: any[], level: number, results: GroupResult[]): void;
    getResults(): GroupResult[];
}
//# sourceMappingURL=Grouper.d.ts.map