class Point { constructor(public x: number, public y: number) { } static Origin(): Point { return { x: 0, y: 0 }; } } module Point { function Origin() { return ""; }// not an error, since not exported } module A { export class Point { constructor(public x: number, public y: number) { } static Origin(): Point { return { x: 0, y: 0 }; } } export module Point { function Origin() { return ""; }// not an error since not exported } }