NUL file for typescript

[kirilloid]

The same issue as existed (#963) now affects typescript files.

[lcd047]

Please see #1155. It's a problem in Node.js, or more precisely in libuv. All checkers based on Node.js are affected, not just tsc or lessc. Syntastic won't add workarounds for all these checkers: if Node.js is happy to live with this, so is syntastic. If you want to see it fixed, you'll have to get it fixed in libuv; sorry about that.