app.js

var myModule = require('myModule');

var myModuleInstance = new myModule();
myModule.hello();
myModule.goodbye();

you should do this var myModule = require('./func.js')

Hey there, it says that myModule.hello is not a function, look at:
myModule.hello();
^

TypeError: myModule.hello is not a function
at Object. (/home/yuri/app.js:4:10)
at Module._compile (module.js:643:30)
at Object.Module._extensions..js (module.js:654:10)
at Module.load (module.js:556:32)
at tryModuleLoad (module.js:499:12)
at Function.Module._load (module.js:491:3)
at Function.Module.runMain (module.js:684:10)
at startup (bootstrap_node.js:187:16)
at bootstrap_node.js:608:3

Oh man! 😂 You're calling that thing in the wrong place

myModule is the class
myModuleInstance is the right instance where you can call your methods

Well, both func.js and app.js are at the same place.

read what I wrote, I said the solution for you, in any moment I talked about where the files are

I got it man.
It worked out.
Thank you very much!

🎉 🎉 🎉

It worked out, but doesn't how say in this article: https://medium.freecodecamp.org/javascript-modules-a-beginner-s-guide-783f7d7a5fcc [PART - CommonJS].
I was trying to understand the CommonJS module, where it has put the path without ./.
Because of that I put var myModule = require('func.js'); without ./