/**
 * Adds a timeout to any promise, rejecting if the timeout is exceeded.
 *
 * @param promise - The promise to add timeout to.
 * @param timeoutMs - Timeout duration in milliseconds.
 * @param timeoutMessage - Custom error message for timeout (default: 'Operation timed out').
 * @returns Promise that resolves with the original promise result or rejects on timeout.
 *
 * @throws {Error} If timeoutMs is negative or timeoutMessage is not a string.
 * @throws {Error} With timeout message if the operation times out.
 *
 * @example
 * // Basic timeout
 * const result = await asyncTimeout(
 *   fetch('/api/data'),
 *   5000
 * ); // Times out after 5 seconds
 *
 * @example
 * // Custom timeout message
 * const result = await asyncTimeout(
 *   longRunningOperation(),
 *   10000,
 *   'Long operation timed out'
 * );
 *
 * @example
 * // Timeout with async function
 * const result = await asyncTimeout(
 *   (async () => {
 *     await delay(15000);
 *     return 'completed';
 *   })(),
 *   10000
 * ); // Will throw timeout error
 *
 * @note The timeout does not cancel the original promise, it just stops waiting for it.
 *
 * @complexity Time: O(1), Space: O(1)
 */
export declare function asyncTimeout<T>(promise: Promise<T>, timeoutMs: number, timeoutMessage?: string): Promise<T>;
//# sourceMappingURL=asyncTimeout.d.ts.map