It is planned for the next version. http://blogs.msdn.com/b/typescript/archive/2...

		pjmlp on Oct 12, 2014 \| parent \| context \| favorite \| on: ESnext – Tomorrow’s JavaScript syntax today It is planned for the next version. http://blogs.msdn.com/b/typescript/archive/2014/10/06/announ... Right at the end "This work and the work to align with ECMAScript 6 is ongoing.".