How to use postcss-import + stylelint

I’m trying to use postcss + postcss-import + stylelint, but when stylelint displays warnings is missing filename:

stylelint

postcss.config.js source:

module.exports = {
    options: {
      map: false
    },
    plugins: {
        "postcss-import": {
            "path": "themes/my-theme/assets/styles",
            "plugins": [require('stylelint')({
                "extends": 'stylelint-config-property-sort-order-smacss',
                "rules": { }
            })]
        }
    }
}

Is there any example of a theme using postcss-import + stylelint?