Talk with @CyrusNajmabadi . Currently we have following different types of comments:

• Pinned comment
• Triple-slash
• Detached comment (i.e. copy right)
• Normal comment (//, /* */, /** **/)

Currently, compilerOptions.removeComments will remove everything but pinned comment and detached comment. However, in some case, users may want to preserve triple-slash or may want to get ride of detached comment. Thus, it will be useful to have a compiler flag that allows users to specify what kind of comments to be remove and by default compilerOptions.removeComments should remove all but pinned comments