import * as Madlad from 'madlad';
import { Command } from './command';
/**
 * Creates CLI Option based on the passed `options` and assigns its value to the property
 *
 * @param options IOption object, which defines the option of the command
 */
export declare function Option(options: Madlad.Argument): PropertyDecorator;
/**
 * Get the yargs option key from ExternalOption metadata on the given property
 *
 * @param target Command instance
 * @param propertyKey Property of the command instance
 */
export declare function getOption<T extends Command, K extends Extract<keyof T, string>>(target: T, propertyKey: K): Madlad.Argument;
/**
 * Init the parameter with value of the desired option, which is defined outside of the class
 *
 * @param key CLI option reference of the required option value (without dashes)
 */
export declare function ExternalOption(key: string): PropertyDecorator;
/**
 * Get the yargs option key from ExternalOption metadata on the given property
 *
 * @param target Command instance
 * @param propertyKey Property of the command instance
 */
export declare function getExternalOption<T extends Command, K extends Extract<keyof T, string>>(target: T, propertyKey: K): string;