export type GridAggregationFunction<T = number, R = number> = (values: T[]) => R | null;
export declare const sum: GridAggregationFunction;
export declare const avg: GridAggregationFunction;
export declare const min: GridAggregationFunction<number | Date, number | Date | null>;
export declare const max: GridAggregationFunction<number | Date, number | Date | null>;
export declare const size: GridAggregationFunction<string | number | Date, number>;
export declare const AGGREGATION_FUNCTIONS: {
    sum: GridAggregationFunction<number, number>;
    avg: GridAggregationFunction<number, number>;
    min: GridAggregationFunction<number | Date, number | Date | null>;
    max: GridAggregationFunction<number | Date, number | Date | null>;
    size: GridAggregationFunction<string | number | Date, number>;
};
//# sourceMappingURL=aggregation.d.ts.map