/**
 * Utilities for AbortController-based cancellation.
 */
/**
 * Sleep that can be interrupted by an AbortSignal.
 * Resolves immediately if signal is already aborted or when aborted during sleep.
 *
 * @param ms - Time to sleep in milliseconds
 * @param signal - Optional AbortSignal to allow early cancellation
 */
export declare function sleepWithAbort(ms: number, signal: AbortSignal | undefined): Promise<void>;
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