export declare function isNumeric(obj: any): boolean;
export declare function isPlainObject(obj: any): boolean;
export declare function isEmptyObject(obj: any): boolean;
export declare function isFunction(obj: any): boolean;
export declare function extend(_target: any, object1?: any, ...objectN: any[]): any;
export declare function toQueryParameters(data: object): string;
export declare function assignObj(obj: object, objectProps?: object): object;