You should consider graduating from VIM and using IntelliJ. This is a cross platform tool, and there is a typescript plugin. I have not tried it, but IntelliJ is a great tool IMO, and well worth a good look.
DocMunch looks awesome! Great job Max + team
I don't understand why "not being on github" is a problem.
Codeplex has an issue tracker and the Typescript repo is a git repo. What can't you do?