Edited Issue: Can't find variable [71]

What am I doing wrong here? I'm using web essentials. I tried both AMD module syntax and commonjs.

common.auth.ts

import api = module("lib/api")
export function getAuthorizationHeader(): string {
...
}

export function setAuthorizationHeader(val: string): string {
...
}

my test.ts:

///<reference path="../dep/qunit/qunit.d.ts"/>
///<reference path="../lib/common.auth.ts"/>
///<reference path="../lib/common.auth.js"/>

import Auth = module('lib/common.auth')

test("authorization header is set", () => {

// arrange
var key = "Bearer ABDE1234";

// act
Auth.setAuthorizationHeader(key);
var header = Auth.getAuthorizationHeader();

// assert
ok(header === key, "The actual header does not match");

});

Chutzpah.auth.js:7: Can't find variable: Auth