The fact that JSON doesn't support comments is so annoying, and I always thought that Douglas Crockford's rationale for this basically made no sense ("They can be misused!" - like, so what, nearly anything can be misused. So without support for comments e.g. in package.json files I have to do even worse hacky workaround bullshit like "__some_field_comment": "this is my comment"). There is of course jsonc and JSON5 but the fact that it's not supported everywhere means 10 years later we still can't write comments in package.json (there is https://github.com/npm/npm/issues/4482 and about a million related issues).