Namespaces in node.js with require

I am playing around and learning about vows with a personal project. This is a small client side library, with testing done in vows. Therefore, I must build and test a file that is written like this:

(function(exports) { 
    var module = export.module = { "version":"0.0.1" }; 
    //more stuff
})(this);

In my testing (based off of science.js, d3, etc.) requires that module like so:

require("../module");

I continued to get a "module not defined error" when trying to run the tests, so I went to a repl and ran:

require("../module")

and it returned:

{ module: { version: "0.0.1" } }

I realize I could do something like:

var module = require("../module").module;

but feel like I am creating a problem by doing it that way, especially since the libraries that I based this project on are doing it in the format I described.

I would like for my project to behave similar to those which I based it off of, where:

require("../module");

creates a variable in this namespace:

module.version; //is valid.

I have seen this in a variety of libraries, and I am following the format and thought process to the T but believe I might be missing something about require behavior I don't know about.