import type { Stream, Streamable } from '@rimbu/stream';
/**
 * Any object that is Iterable, a Stream, or can produce a Stream.
 * @typeparam T - the element type
 */
export type StreamSource<T> = undefined | Iterable<T> | Stream<T> | Streamable<T>;
export declare namespace StreamSource {
    /**
     * Any object that is a non-empty Stream, can produce a non-empty Stream, or is a non-empty array.
     * @typeparam T - the element type
     */
    type NonEmpty<T> = Stream.NonEmpty<T> | Streamable.NonEmpty<T> | readonly [T, ...T[]];
}