import { TApiMiddleware, IContext, TNext } from "../interfaces";
export declare const getClass: (target: any) => any;
export declare const getClassOrSymbol: (target: any) => any;
export declare const getClassName: (target: any) => string;
export declare const isEmpty: (value: any) => boolean;
export declare const isArray: (target: any) => boolean;
export declare const descriptorOf: (target: any, propertyKey: string) => PropertyDescriptor;
export declare const toArray: (target: any) => any[];
export declare const isJsonString: (str: string) => boolean;
export declare const apiDescriptionMapKey: (target: any, propertyKey: any) => string;
export declare const createParamsMapKey: (target: any, propertyKey: any) => string;
export declare const toAsyncMiddleware: (target: any, middleware: TApiMiddleware, key?: string, cb?: (key: string, ctx: IContext, next: TNext) => any[]) => (ctx: IContext, next: TNext) => Promise<any>;
export declare const toErrorAsyncMiddleware: (target: any, middleware: TApiMiddleware, key?: string, cb?: (key: string, err: Error, ctx: IContext) => any[]) => (err: Error, ctx: IContext) => any;