import { AsyncEnumerable } from "./AsyncEnumerable";
export declare class DistinctAsyncEnumerable<T = any> extends AsyncEnumerable<T> {
    protected readonly parent: AsyncEnumerable<T>;
    protected readonly selector?: (item: T) => any | PromiseLike<any>;
    constructor(parent: AsyncEnumerable<T>, selector?: (item: T) => any | PromiseLike<any>);
    protected generator(): AsyncIterableIterator<T>;
}