Get the MAC address of the current machine you are on.
This library will not run in web browsers / on the client-side / in webpack / in browserify / in angular / in react / in jQuery / in HTML. It will only run on Node.js environments, which the web browser is not.
import getMac from "xingwa_mac";
if more than 2 MAC address ,return Array;
if only 1 MAC address ,return String;
if 0 MAC address,return NULL;