How can I combine my own node modules into a single module for deployment

I have ported an old C# library into Node.js. Because the original source was all in separate class files, I have ended up with a bunch of custom modules (see example). Now I want to use this 'library' in a website I have build using Node.js and express. Whats the best way to deploy my 'Library' into the website folder structure/repo. I was thinking I should 'build' or combine all of these modules into a single module/file to use in the website structure. How could I do that without re-crafting it all by hand?

foo_util.js

GLOBAL.pi = function () {
    return 3.142;
};

foo.js

var util = require('./foo_util');
exports.foo = function(name){
    this.name = name;
};
exports.foo.prototype.SayHello = function(nextPart){
    return 'Hello ' + this.name;
};

bar.js

var util = require('./foo_util');
var foo = require('./foo');
exports.bar = function(name, age){
    this.name = name;
    this.age = (age!=0?age:pi());
};
exports.bar.prototype = new foo.foo();

test_bar.js (nodeunit)

var foo = require('./foo');
var bar = require('./bar');
exports.SampleTest = function(Assert)
{
    var target = new bar.bar('Bob', 0);
    var msg = target.SayHello();
    Assert.strictEqual(target.age, 3.142,"child class attribute should be set");
    Assert.strictEqual(target instanceof bar.bar, true, "should be a bar");
    Assert.strictEqual(target instanceof foo.foo, true, "should also be a foo");
    Assert.strictEqual(msg, "Hello Bob","parent method should work");
    Assert.done();
};