export declare function transformAsync<T, U>(iterable: Iterable<T>, transformer: (iterable: Iterable<T>) => AsyncIterable<U>): AsyncIterableIterator<Awaited<U>>;
export declare function transformAsync<T, U>(iterable: AsyncIterable<T>, transformer: (iterable: AsyncIterable<T>) => AsyncIterable<U>): AsyncIterableIterator<Awaited<U>>;