interface SleepOptions {
    /**
     * When provided the corresponding `AbortController` can be used to cancel an asynchronous action.
     */
    signal?: AbortSignal | undefined;
    /**
     * Set to `false` to indicate that the scheduled `Timeout`
     * should not require the Node.js event loop to remain active.
     * @default true
     */
    ref?: boolean | undefined;
}
/**
 * Sleeps for the specified number of milliseconds.
 * For a synchronous variant, see [sleepSync](./sleepSync.d.ts).
 * @param ms The number of milliseconds to sleep.
 * @param value A value with which the promise is fulfilled.
 * @see {@link sleepSync} for a synchronous version.
 */
declare function sleep<T = undefined>(ms: number, value?: T, options?: SleepOptions): Promise<T>;

export { type SleepOptions, sleep };