This has already been fixed upstream, so maybe a better fix is to pull
in the latest version of coffee-script.
For more details, please see:
https://github.com/jashkenas/coffee-script/pull/1807
errors on windows using clang version 3.0 (tags/RELEASE_30/final). This
can be reverted once emscripten upgrades to clang 3.1.
For more details, please see:
http://comments.gmane.org/gmane.comp.compilers.clang.scm/41578