export declare const DEFAULT_CONCURRENCY = 8;
export declare function getConcurrency(): number;
/**
 * Run `worker` over every item with at most `limit` in flight. Preserves input
 * order in the returned array. Calls `onProgress(completedCount)` after each
 * item resolves (rejections are propagated — the first rejection halts later
 * work but in-flight promises are awaited).
 */
export declare function runWithConcurrency<T, R>(items: T[], limit: number, worker: (item: T, index: number) => Promise<R>, onProgress?: (done: number) => void): Promise<R[]>;
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