.stylelintrc.js

'use strict';

module.exports = {
  rules: {
    'at-rule-semicolon-newline-after': 'always',
    'block-no-empty': true,
    'block-opening-brace-newline-after': 'always',
    'block-closing-brace-newline-before': 'always',
    'block-opening-brace-space-before': 'always',
    'color-hex-length': 'short',
    'color-no-invalid-hex': true,
    'declaration-block-no-duplicate-properties': [true, { ignore: ['consecutive-duplicates'] }],
    'declaration-block-no-shorthand-property-overrides': true,
    'declaration-block-trailing-semicolon': 'always',
    'function-url-quotes': 'never',
    indentation: 2,
    'max-empty-lines': 2,
    'max-line-length': 200,
    'max-nesting-depth': 5,
    'no-duplicate-selectors': true,
    'no-eol-whitespace': true,
    'no-missing-end-of-source-newline': true,
    'no-unknown-animations': true,
    'length-zero-no-unit': true,
    'rule-empty-line-before': ['always-multi-line', { ignore: ['after-comment', 'inside-block'] }],
    'string-no-newline': true,
    'time-min-milliseconds': 100,
    'unit-no-unknown': true,

    'function-linear-gradient-no-nonstandard-direction': true,
    'property-no-vendor-prefix': null,
    'selector-no-vendor-prefix': null,
    'value-no-vendor-prefix': true,

    'comment-whitespace-inside': 'always',
    'declaration-bang-space-after': 'never',
    'declaration-bang-space-before': 'always',
    'declaration-colon-space-after': 'always',
    'declaration-colon-space-before': 'never',
    'function-comma-space-after': 'always',
    'function-comma-space-before': 'never',
    'function-calc-no-unspaced-operator': true,
    'function-whitespace-after': 'always',
    'media-feature-colon-space-after': 'always',
    'media-feature-colon-space-before': 'never',
    'media-feature-parentheses-space-inside': 'never',
    'media-feature-range-operator-space-after': 'always',
    'media-feature-range-operator-space-before': 'always',
    'selector-combinator-space-after': 'always',
    'selector-combinator-space-before': 'always',
    'selector-list-comma-space-after': 'always-single-line',
    'selector-list-comma-space-before': 'never',
    'value-list-comma-space-after': 'always',
    'value-list-comma-space-before': 'never',

    'at-rule-name-case': 'lower',
    'function-name-case': 'lower',
    'property-case': 'lower',
    'selector-pseudo-class-case': 'lower',
    'selector-pseudo-element-case': 'lower',
    'selector-type-case': 'lower',
    'unit-case': 'lower',
  },
}