Option to ignore Visit nodes based on comments.

[flickyiyo]

Currently I am working on a tool to find unused exports using Visit trait implementations, problem being that some exports need to be preserved even when they are not used outside the file they are declared. I've worked creating custom eslint rules before and there is a way to disable eslint during codescan in specific files, line, or blocks of code using comments such as /* eslint-disable */.

Is there any feature here that I can use create such functionality?
If not, where/how can I get started to add said option in swc?

[kwonoj]

If you're implementing a visitor in a specific node you could check attached comments to do necessary conditions. There are some refereces around existing swc plugins out there. If you're asking to do have some feature supported out of the box by @swc/core, the answer is probably no.

[flickyiyo]

After looking at the documentation, swc_core::common::comments::SingleThreadedComments provided the functionality I needed to implement a webpack's magic comment like feature in my project.