import { Except } from 'type-fest';
import { Operations } from '../helpers/operations';
import { AggregationResult } from '../models/AggregationResult';
import { NumberBucket } from '../models/CountResult';
import { Iteratee } from './accesor';
export interface AggregationOptions<T> {
    keyGetter: Iteratee<T, string>;
    valueGetter: Iteratee<T, number>;
    eventsGetter?: Iteratee<T, number>;
    operation: Operations;
}
/**
 * Performs an aggregation operation using string-based buckets
 *
 * @export
 * @template T
 * @param {T[]} array
 * @param {string[][]} buckets
 * @param {AggregationOptions<T>} aggregationOptions
 * @return {AggregationResult}
 */
export declare function aggregateByStringBuckets<T>(array: T[], buckets: string[][], aggregationOptions: AggregationOptions<T>): AggregationResult;
/**
 * Performs an aggregation operation using number-based buckets
 *
 * @export
 * @template T
 * @param {T[]} array
 * @param {NumberBucket[]} buckets
 * @param {Except<AggregationOptions<T>, 'keyGetter'>} aggregationOptions
 * @return {*}  {AggregationResult}
 */
export declare function aggregateByNumberBuckets<T>(array: T[], buckets: NumberBucket[], aggregationOptions: Except<AggregationOptions<T>, 'keyGetter'>): AggregationResult;