TypeScript Sadness

test.ts

module b {
    class Foo {
        public foo() {
            console.log('B foo');
        }
    }
}


module a {
    export class Foo {
        public foo() {
            var b = new b.Foo();
            b.foo();
        }
    }
}

var aFoo = new a.Foo();
aFoo.foo();