stylelint-config-l3e/rules/custom-property.js

module.exports = {
  rules: {
    'custom-property-empty-line-before': [
      'always',
      {
        except: ['after-custom-property', 'first-nested'],
        ignore: ['after-comment', 'inside-single-line-block']
      }
    ]
    // 'custom-property-pattern': regex|string
  }
}