import { Transducer } from "./transducer";
export declare class ZipTransducer<A, B> implements Transducer<A, [A, B]> {
    other: Iterable<B> | AsyncIterable<B>;
    constructor(other: Iterable<B> | AsyncIterable<B>);
    async_(iterable: AsyncIterable<A>): AsyncIterable<[A, B]>;
    sync(iterable: Iterable<A>): Iterable<[A, B]>;
}
export declare function zip<A, B>(other: Iterable<B> | AsyncIterable<B>): ZipTransducer<A, B>;
export declare function zipWithIndex<A>(): ZipTransducer<A, number>;