FWIW, I've only tested emacs support. It's definitely sub-par. Barely indentation and syntax highlighting, we're still in need of a real typescript-mode for emacs.
I appreciate the effort, (I can't say the same for other Microsoft projects), but it's still not fun to play with typescript in emacs (as opposed to more mature projects like Python, C or, of course, Lisp).
Is there more than just syntax support in Sublime? I was pretty psyched when TypeScript was first announced but quickly bummed that the Sublime plugin didn't have any of the fancy autocomplete features.
It is running on Linux/Mac/Windows (node.js module).
And already has support in all major IDE (Visual Studio, IntelliJ) and text editors (Sublime, Emacs, ..)