import { AnyIterable } from './types';
export declare function concat<T>(inputs: AnyIterable<AnyIterable<T>>, inputConcurrency: number, outputConcurrency?: number): AsyncGenerator<T>;
/**
 * Creates a function that processes multiple async iterables concurrently,
 * yielding values as they become available from any iterator
 */
export declare function concat<T>(inputConcurrency: number, outputConcurrency?: number): (iterators: AnyIterable<AnyIterable<T>>) => AsyncGenerator<T>;
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