.stylelintrc.json

{
  "rules": {
    "at-rule-empty-line-before": [
      "always",
      {
        "except": ["first-nested"],
        "ignore": ["blockless-after-same-name-blockless", "after-comment"]
      }
    ],
    "at-rule-name-case": "lower",
    "at-rule-name-space-after": "always",
    "at-rule-semicolon-newline-after": "always",
    "at-rule-semicolon-space-before": "never",
    "at-rule-allowed-list": [
      "content",
      "else",
      "each",
      "font-face",
      "function",
      "for",
      "if",
      "import",
      "include",
      "media",
      "mixin",
      "return",
      "extend",
      "keyframes"
    ],
    "block-closing-brace-empty-line-before": "never",
    "block-closing-brace-newline-after": [
      "always",
      {
        "ignoreAtRules": ["if", "else"]
      }
    ],
    "block-closing-brace-newline-before": "always",
    "block-no-empty": true,
    "block-opening-brace-newline-after": "always",
    "color-hex-length": "long",
    "color-named": "never",
    "color-no-invalid-hex": true,
    "comment-empty-line-before": [
      "always",
      {
        "except": ["first-nested"]
      },
      {
        "ignore": ["stylelint-commands"]
      }
    ],
    "comment-no-empty": true,
    "comment-whitespace-inside": "always",
    "declaration-bang-space-after": "never",
    "declaration-bang-space-before": "always",
    "declaration-block-no-duplicate-properties": true,
    "declaration-block-no-redundant-longhand-properties": [
      true,
      {
        "ignoreShorthands": ["grid-template"]
      }
    ],
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-semicolon-newline-after": "always-multi-line",
    "declaration-block-semicolon-newline-before": "never-multi-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": "never",
    "font-family-name-quotes": "always-unless-keyword",
    "font-family-no-duplicate-names": true,
    "font-weight-notation": "numeric",
    "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-name-case": "lower",
    "function-url-no-scheme-relative": true,
    "function-url-scheme-disallowed-list": ["ftp", "/^http/"],
    "function-url-quotes": [
      "always",
      {
        "except": ["empty"]
      }
    ],
    "function-whitespace-after": "always",
    "indentation": [2, { "ignore": ["param"] }],
    "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-name-no-vendor-prefix": 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": "never-multi-line",
    "media-query-list-comma-newline-before": "never-multi-line",
    "media-query-list-comma-space-after": "always",
    "media-query-list-comma-space-before": "never",
    "no-duplicate-selectors": true,
    "no-eol-whitespace": true,
    "no-extra-semicolons": true,
    "number-leading-zero": "always",
    "number-max-precision": 2,
    "property-case": "lower",
    "property-no-unknown": true,
    "property-no-vendor-prefix": true,
    "rule-empty-line-before": [
      "always",
      {
        "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-attribute-quotes": "always",
    "selector-class-pattern": "(?:[a-z]+-)*[a-z]+",
    "selector-combinator-space-after": "always",
    "selector-combinator-space-before": "always",
    "selector-descendant-combinator-no-non-space": true,
    "selector-list-comma-newline-before": "never-multi-line",
    "selector-list-comma-space-after": "always-single-line",
    "selector-list-comma-space-before": "never",
    "selector-max-empty-lines": 0,
    "selector-max-id": 0,
    "selector-max-type": [
      0,
      {
        "ignoreTypes": [
          "body",
          "/^/deep/$/",
          "g",
          "html",
          "line",
          "path",
          "svg"
        ]
      }
    ],
    "selector-no-vendor-prefix": true,
    "selector-pseudo-class-case": "lower",
    "selector-pseudo-class-no-unknown": true,
    "selector-pseudo-class-parentheses-space-inside": "never",
    "selector-pseudo-element-case": "lower",
    "selector-pseudo-element-colon-notation": "double",
    "selector-pseudo-element-no-unknown": [
      true,
      {
        "ignorePseudoElements": ["ng-deep"]
      }
    ],
    "selector-type-case": "lower",
    "string-no-newline": true,
    "string-quotes": "single",
    "unit-case": "lower",
    "unit-no-unknown": true,
    "unit-allowed-list": ["%", "deg", "px", "s", "fr", "rem", "em", "vh", "vw", "ms"],
    "value-keyword-case": "lower",
    "value-list-comma-newline-after": "never-multi-line",
    "value-list-comma-newline-before": "never-multi-line",
    "value-list-comma-space-after": "always",
    "value-list-comma-space-before": "never",
    "value-list-max-empty-lines": 0,
    "value-no-vendor-prefix": true
  }
}