Preserve JSDocs in *.d.ts files when stripping comments

Suggestion/Feature

When using the switch removeComments it will strip out all comments including the ones you may consider useful to the end consumer such as JSDocs. I'd like to strip out any internal comments but preserve any JSDocs comments. It seems that an option to preserve comments in types would be sufficient.

Existing functionality

"removeComments": true,
"declaration": true,

removes all comments including those in *.d.ts files.

Suggested functionality

"removeComments": true,
"declaration": true,

I would think by default you'd want to include the JSDocs in your type defs, so this would remove all comments from the code, but retain any comments associated with the types ie JSDocs.

If however, there is a need to remove all comments then an additional switch may be required to serve that purpose:

"removeCommentsIncludingDeclarations": true,
"declaration": true,

Would produce the same result we have today.

Start by reproducing the issue with "removeComments" and "declaration" enabled, then compare the generated JavaScript and .d.ts output. Done means internal comments are removed while JSDoc comments associated with declarations remain, with a documented way to preserve the current all-comments removal behavior if needed.