import { COMMAND } from '../constants/command';
/**
 * 是否为有效command
 *
 * @export
 * @param {COMMAND} command command
 */
export declare function isValidCommand(command: COMMAND): boolean;
/**
 * 提示command不支持
 *
 * @export
 * @param {COMMAND} command command
 */
export declare function reportUnknownCommand(command: string): void;
/**
 * 提示argument不支持
 *
 * @export
 * @param {string} arg arguments
 */
export declare function reportUnknownArgument(arg: string): void;