How to move a method into a separate module?

Question

JavaScript

There is a method like How to put it into a separate module and later attach it to the main file?
Array.prototype.replacer = function()

Answer 1

And what, exactly, is the problem?
It's just that in order for the prototype extension to work, you need to call this module.
Wrap your code in a function, then call it with require(your file)( )