The main package (stylefmt) that uses this extension is no longer being developed. I don't see the point in using outdated technology.

Instead of stylefmt you can use the following solutions:

• postcss with similar plugins.
• stylelint
• Maybe something else

I am releasing the last release of this extension and archiving it.

I am ready to back to the plugin support if the main package find a maintainer and back to the active development. Right now, this is the last release (not a latest).