import type { WaitForExpectedResultOptions, WaitForPortOptions } from '../../@types/wait-for.js';
/** Wait until the defined milliseconds. */
export declare const sleep: (milliseconds: number) => Promise<void>;
/** Wait until a result is equal the expected value. */
export declare const waitForExpectedResult: (callback: () => unknown | Promise<unknown>, expectedResult: unknown, options?: WaitForExpectedResultOptions) => Promise<void>;
/** Wait until the defined port is active. */
export declare const waitForPort: (port: number, options?: WaitForPortOptions) => Promise<void>;