export interface Thunk {
    (): any;
}
/**
 * Implements '@property' decorator factory
 * This is used to specify complex service types to be exposed
 *
 * @example
 * ~~~typescript
 * import { property, expose, IMQService } from '@imqueue/rpc';
 *
 * class Address {
 *     @property('string')
 *     country: string;
 *
 *     @property('string')
 *     city: string;
 *
 *     @property('string')
 *     address: string;
 *
 *     @property('string', true)
 *     zipCode?: string; // this is optional
 * }
 *
 * class User {
 *     @property('string')
 *     firstName: string;
 *
 *     @property('string')
 *     lastName: string;
 *
 *     @property('string')
 *     email: string;
 *
 *     @property('Array<Address>', true)
 *     address?: Array<Address>;
 * }
 *
 * // now we can use those complex types as service methods args
 * // and them will be properly exposed to service clients
 *
 * class UserService extends IMQService {
 *
 *     @expose()
 *     public save(user: User) {
 *         // do smth with given user data to persis it
 *     }
 *
 *     @expose()
 *     public find(id: number): User {
 *        // find and return user
 *     }
 *
 * }
 * ~~~
 *
 * @return {(
 *    target: any,
 *    methodName: (string),
 *    descriptor: TypedPropertyDescriptor<(...args: any[]) => any>
 * ) => void}
 */
export declare function property(type: string | Thunk | any, isOptional?: boolean): any;