How to include comments when compiling gulp files?

Question

css

gulp removes comments when compiling files, I would like to know how to fix this?
Currently interested in jade and stylus

Answer 1

There are 2 types of comments in jade
// This is how the comment will be compiled
//- This is not how it will be

Answer 2

It doesn't kill gulp, but the thread handlers themselves.
Customize them.
I think it will be here:
However, in these files, comments have nothing to do. Maybe you better include sourcemaps?
https://www.npmjs.com/package/gulp-stylus