export declare class ObjectHelper {
    baseExtend(dst: any, objs: any, deep: any): any;
    extend(dst: any, dst1?: any, dst2?: any): any;
    merge(dst: any, dst1?: any, dst2?: any): any;
    isObject(value: any): boolean;
    isDate(value: any): boolean;
    isFunction(value: any): boolean;
    isElement(node: any): boolean;
    isRegExp(value: any): boolean;
}