TSC removes empty lines for plain javascript

[matthiasg]

When trying to integrate TS into a project I noticed that the compiler removes all whitespace (babel tries to keep that). That means just renaming a file to ts and adding the global types results in having to rely on properly working source maps for debugging which is quite annoying.

any plans or workarounds ?

[DanielRosenwasser]

Another issue has been filed regarding this at #843.