import { IterableX } from '../../iterable/iterablex';
export declare function reduceProto<T, R = T>(this: IterableX<T>, accumulator: (previousValue: R, currentValue: T, currentIndex: number) => R, seed?: never[]): R;
export declare function reduceProto<T, R = T>(this: IterableX<T>, accumulator: (previousValue: R, currentValue: T, currentIndex: number) => R, seed?: R): R;
declare module '../../iterable/iterablex' {
    interface IterableX<T> {
        reduce: typeof reduceProto;
    }
}