Hi @jbondc, I'm your friendly neighborhood Microsoft Pull Request Bot (You can call me MSBOT). Thanks for your contribution!

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What effect does this have?

Oops the 'return' was accidental. I'll add 'interactive' to exec() as well.
If you use console.log() statements in the compiler, Jake doesn't pipe stdout properly, something wrong with:
https://github.com/jakejs/jake/blob/master/lib/utils/index.js#L197
http://nodejs.org/api/child_process.html#child_process_options_stdio

Ahh, looks like it uncovered two bugs :)

(a)
jake perftsc

(b)
https://github.com/Microsoft/TypeScript/blob/master/tests/cases/unittests/services/colorization.ts#L46

Third argument: syntacticClassifierAbsent: boolean ?

@DanielRosenwasser is looking into syntacticClassifierAbsent

We've decided that this parameter should no longer be optional. #2051.

Try pulling in recent changes and update the PR.

Reopened in another pull request, no idea why build is failing.