/**
 * The MuxAsyncIterator class multiplexes multiple async iterators into a single
 * stream. It currently makes an assumption that the final result (the value
 * returned and not yielded from the iterator) does not matter; if there is any
 * result, it is discarded.
 *
 * @example
 * ```typescript
 * import { MuxAsyncIterator } from "https://deno.land/std@$STD_VERSION/async/mod.ts";
 *
 * async function* gen123(): AsyncIterableIterator<number> {
 *   yield 1;
 *   yield 2;
 *   yield 3;
 * }
 *
 * async function* gen456(): AsyncIterableIterator<number> {
 *   yield 4;
 *   yield 5;
 *   yield 6;
 * }
 *
 * const mux = new MuxAsyncIterator<number>();
 * mux.add(gen123());
 * mux.add(gen456());
 * for await (const value of mux) {
 *   // ...
 * }
 * // ..
 * ```
 */
export declare class MuxAsyncIterator<T> implements AsyncIterable<T> {
    #private;
    add(iterable: AsyncIterable<T>): void;
    iterate(): AsyncIterableIterator<T>;
    [Symbol.asyncIterator](): AsyncIterator<T>;
}