stylelint.config.js

'use strict'

module.exports = {
  'plugins': ['stylelint-order'],
  'rules': {
    'at-rule-empty-line-before': ['always', {
      'except': [
        'blockless-after-same-name-blockless',
        'first-nested'
      ],
      'ignore': ['after-comment']
    }],

    'at-rule-name-case': 'lower',

    'at-rule-name-space-after': 'always-single-line',

    'at-rule-semicolon-newline-after': 'always',

    'block-closing-brace-empty-line-before': 'never',

    'block-closing-brace-newline-after': 'always',

    'block-closing-brace-newline-before': 'always-multi-line',

    'block-closing-brace-space-before': 'always-single-line',

    'block-opening-brace-newline-after': 'always-multi-line',

    'block-opening-brace-space-after': 'always-single-line',

    'block-opening-brace-space-before': 'always',

    'color-hex-case': 'lower',

    'color-hex-length': 'short',

    'color-no-invalid-hex': true,

    'comment-empty-line-before': ['always', {
      'except': ['first-nested'],
      'ignore': ['stylelint-commands']
    }],

    'comment-no-empty': true,

    'comment-whitespace-inside': 'always',

    'custom-property-empty-line-before': ['always', {
      'except': [
        'after-custom-property',
        'first-nested'
      ],
      'ignore': [
        'after-comment',
        'inside-single-line-block'
      ]
    }],

    'declaration-bang-space-after': 'never',

    'declaration-bang-space-before': 'always',

    'declaration-block-no-duplicate-properties': [true, {
      'ignore': ['consecutive-duplicates-with-different-values']
    }],

    'declaration-block-no-redundant-longhand-properties': true,

    'declaration-block-no-shorthand-property-overrides': true,

    'declaration-block-semicolon-newline-after': 'always-multi-line',

    'declaration-block-semicolon-space-after': 'always-single-line',

    'declaration-block-semicolon-space-before': 'never',

    'declaration-block-single-line-max-declarations': 1,

    'declaration-block-trailing-semicolon': 'always',

    'declaration-colon-space-after': 'always-single-line',

    'declaration-colon-space-before': 'never',

    'declaration-empty-line-before': ['always', {
      'except': [
        'after-declaration',
        'first-nested'
      ],
      'ignore': [
        'after-comment',
        'inside-single-line-block'
      ]
    }],

    'font-family-no-duplicate-names': true,

    'function-calc-no-unspaced-operator': true,

    'function-comma-space-after': 'always-single-line',

    'function-comma-space-before': 'never',

    'function-linear-gradient-no-nonstandard-direction': true,

    'function-max-empty-lines': 0,

    'function-name-case': 'lower',

    'function-parentheses-newline-inside': 'always-multi-line',

    'function-parentheses-space-inside': 'never-single-line',

    'function-whitespace-after': 'always',

    'indentation': 2,

    'keyframe-declaration-no-important': true,

    'length-zero-no-unit': true,

    'max-empty-lines': 1,

    'media-feature-colon-space-after': 'always',

    'media-feature-colon-space-before': 'never',

    'media-feature-name-case': 'lower',

    'media-feature-name-no-unknown': true,

    'media-feature-parentheses-space-inside': 'never',

    'media-feature-range-operator-space-after': 'always',

    'media-feature-range-operator-space-before': 'always',

    'media-query-list-comma-newline-after': 'always-multi-line',

    'media-query-list-comma-space-after': 'always-single-line',

    'media-query-list-comma-space-before': 'never',

    'no-empty-source': true,

    'no-eol-whitespace': true,

    'no-extra-semicolons': true,

    'no-invalid-double-slash-comments': true,

    'no-missing-end-of-source-newline': true,

    'number-leading-zero': 'always',

    'number-no-trailing-zeros': true,

    'order/order': [
      'custom-properties',
      'at-variables',
      'declarations',
      'rules'
    ],

    'order/properties-alphabetical-order': true,

    'property-case': 'lower',

    'rule-empty-line-before': ['always-multi-line', {
      'except': ['first-nested'],
      'ignore': ['after-comment']
    }],

    'selector-attribute-brackets-space-inside': 'never',

    'selector-attribute-operator-space-after': 'never',

    'selector-attribute-operator-space-before': 'never',

    'selector-combinator-space-after': 'always',

    'selector-combinator-space-before': 'always',

    'selector-descendant-combinator-no-non-space': true,

    'selector-list-comma-newline-after': 'always',

    'selector-list-comma-space-before': 'never',

    'selector-max-empty-lines': 0,

    'selector-pseudo-class-case': 'lower',

    'selector-pseudo-class-no-unknown': [true, {
      'ignorePseudoClasses': 'export'
    }],

    'selector-pseudo-class-parentheses-space-inside': 'never',

    'selector-pseudo-element-case': 'lower',

    'selector-pseudo-element-colon-notation': 'double',

    'selector-pseudo-element-no-unknown': true,

    'selector-type-case': 'lower',

    'selector-type-no-unknown': true,

    'shorthand-property-no-redundant-values': true,

    'string-no-newline': true,

    'unit-case': 'lower',

    'unit-no-unknown': true,

    'value-list-comma-newline-after': 'always-multi-line',

    'value-list-comma-space-after': 'always-single-line',

    'value-list-comma-space-before': 'never',

    'value-list-max-empty-lines': 0
  }
}