TypeScript class per file in same namespace in Node.js

Question

What is the pattern for one class per file where multiple classes (and therefore multiple files) contribute to the same namespace? I'm asking this specifically in a Node.js context.

I know how to define one class per file in the same namespace:

foo/A.ts:

module foo {
    export class A {
    }
}

foo/B.ts:

module foo {
    export class B {
    }
}

main.ts:

/// <reference path="./foo/A.ts"/>
/// <reference path="./foo/B.ts"/>

// TODO: How do I import the foo namespace at runtime?

TypeScript is supposedly a language for application-scale JavaScript development, yet we seem to be left out in the cold on the most fundamental aspect of application-scale development, which is how to layout and structure code files and how everything is linked together at runtime.

Answer 1

As basarat mentions, in Node.js, files are modules. The correct way to write the code you are working on is:

foo/A.ts:

class A {
}

export = A;

foo/B.ts:

class B {
}

export = B;

main.ts:

import A = require('./foo/A');
import B = require('./foo/B');

This is detailed in the Imports and Exports section of The Definitive Guide to TypeScript.