/**
 * Simulates an asynchronous operation with configurable delay and failure mode
 * @param delay Delay in milliseconds (default: 1000ms)
 * @param isFail Whether to simulate failure (default: false)
 * @param signal AbortSignal for cancellation
 * @returns Promise that resolves with 1 or rejects with 0/AbortError
 */
export declare const simulateAsync: ({ delay, isFail, signal }?: SimulateAsyncOptions) => Promise<1 | 0>;

declare interface SimulateAsyncOptions {
    delay?: number;
    isFail?: boolean;
    signal?: AbortSignal;
}

export { }