/**
 * Promise-based delay that respects an optional AbortSignal.
 *
 * Resolves after `ms` milliseconds. If `signal` is provided and is
 * (or becomes) aborted, the promise rejects with `signal.reason`
 * (or `new Error('Aborted')` if `reason` is unset) and clears the
 * pending timer.
 *
 * Used by polling loops in resource extensions (e.g. `addOn.createAndWait`,
 * `pipelinePromotion.promote`) to space out poll requests while staying
 * responsive to cancellation.
 *
 * @param ms Milliseconds to wait before resolving.
 * @param signal Optional AbortSignal to cancel the wait early.
 */
export declare function wait(ms: number, signal?: AbortSignal): Promise<void>;