Fix command line crash with invalid '--moduleResolution' option#4735

Merged

DanielRosenwasser merged 3 commits into

release-1.6from

commandLineCrashModuleResolution

Sep 10, 2015

Commits on Sep 10, 2015

Assert condition to track root cause of issue.
DanielRosenwasser
committed
Added error for bad argument, fixed diagnostic for '--help' message.
DanielRosenwasser
committed
Encode the conditional presence of 'error' in the type system.
DanielRosenwasser
committed