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