import { Type } from "./interfaces/IType";
export declare class Utils {
    static isClass: (fn: any) => boolean;
    static getRequiredParamLength(constructor: any): any;
    static getMeta<R>(key: string | symbol, ctr: Type, def: R): R;
    static logClass(ctr: any, missParamIndex?: number): string;
    static isPrimitiveCtr(ctr: any): boolean;
}