/** Provides a way for callbacks to signal early completion */
export declare class StopError extends Error {
}
/**
 * Converts an async iterable into a series of callbacks. The function returns
 * a promise that resolves when the stream is done
 *
 * @param callback the callback that gets called for each value
 */
export declare function toCallbacks<T>(callback: (result: IteratorResult<T>) => Promise<void>): (source: AsyncIterable<T>) => Promise<void>;