[coldtea]

Quite hard. Isn't the whole point of the minification to remove non functional parts to make the size smaller?

[zerocrates]

Not really hard... for one there's a convention of putting an exclamation point at the start of comments that should survive the minification/compilation process, for this very purpose.

[bambax]

Not hard at all. A couple of comments won't make any difference. Here's the minified version of one of react components for example:

https://unpkg.com/react@18.2.0/umd/react.production.min.js