import { AsyncIterableX } from '../asynciterablex';
import { OperatorAsyncFunction } from '../../interfaces';
export declare class FlatMapAsyncIterable<TSource, TResult> extends AsyncIterableX<TResult> {
    private _source;
    private _selector;
    constructor(source: AsyncIterable<TSource>, selector: (value: TSource) => AsyncIterable<TResult> | Promise<AsyncIterable<TResult>>);
    [Symbol.asyncIterator](): AsyncGenerator<TResult, void, unknown>;
}
export declare function flatMap<TSource, TResult>(selector: (value: TSource) => AsyncIterable<TResult> | Promise<AsyncIterable<TResult>>, thisArg?: any): OperatorAsyncFunction<TSource, TResult>;