import { AnyIterable } from './types';
export declare function _reduce<T, B>(func: (acc: B, value: T) => B, start: B, iterable: AnyIterable<T>): Promise<B>;
export declare function reduce<T, B>(func: (acc: B, value: T) => B): {
    (start: B): (iterable: AnyIterable<T>) => Promise<B>;
    (start: B, iterable: AnyIterable<T>): Promise<B>;
};
export declare function reduce<T, B>(func: (acc: B, value: T) => B, start: B): (iterable: AnyIterable<T>) => Promise<B>;
export declare function reduce<T, B>(func: (acc: B, value: T) => B, start: B, iterable: AnyIterable<T>): Promise<B>;