import { Transducer } from "./transducer";
export declare class IdentityTransducer<A> implements Transducer<A, A> {
    async_(iterable: AsyncIterable<A>): AsyncIterable<A>;
    sync(iterable: Iterable<A>): Iterable<A>;
}
export declare function identity<A>(): IdentityTransducer<A>;
export declare const transducer: typeof identity;