Question: how to detect when yaml contains comments

[markwongsk]

In my use case, users write yaml with comments and expect them to be preserved. This might be out of the project's scope, but is there a way I can warn the user? I'm looking at https://github.com/nodeca/js-yaml/blob/master/lib/js-yaml/loader.js#L343-L347 and would want a throwWarning or throwError for my use case.

[dervus]

For that normally you should you use YAML implementation that can produce AST. Like libyaml or JS-YAML 1.x (unsupported).