Exporting modules in JavaScript

In my latest entry I explain the difference about exporting a module between server side or CLI environments such Nashorn, SpiderMonkey, JSC, or micro controller and embedded engines such Duktape, Espruino, KinomaJS, and Desktop UI space via GJS.
Using this is a universal way to attach and export properties but when it comes to ES2015 modules, incompatible with CommonJS and with an undefined execution context.
Enjoy