/** The MuxAsyncIterator class multiplexes multiple async iterators into a
 * single stream. It currently makes an assumption:
 * - The final result (the value returned and not yielded from the iterator)
 *   does not matter; if there is any, it is discarded.
 */
export declare class MuxAsyncIterator<T> implements AsyncIterable<T> {
    private iteratorCount;
    private yields;
    private throws;
    private signal;
    add(iterable: AsyncIterable<T>): void;
    private callIteratorNext;
    iterate(): AsyncIterableIterator<T>;
    [Symbol.asyncIterator](): AsyncIterator<T>;
}