import { IEnumerable } from './_types';
import { IEnumerator } from '../Enumerators/_types';
import { EnumerableBase } from './index';
export declare class AggregateEnumerable<T, TReturn> extends EnumerableBase<TReturn> {
    #private;
    constructor(enumerable: IEnumerable<T>, aggregateFunction: (acumulate: TReturn, current: T) => TReturn, initialValue: TReturn);
    getEnumerator(): IEnumerator<TReturn>;
}