Could you please add support for js{x}/ts{x} files so it starts working with css-in-js ala styled-components?
I do not sure if it all correct but I've created a pull request: #6
Hey @fffed, I've had to make css-in-js an optional feature, disabled by default, because it was causing some issues (see issue #7). If you upgrade to v1.2.0, you can enable it in your coc-settings.json by setting stylelintplus.cssInJs to true.