.stylelintrc

{
  "plugins": [
    "stylelint-scss"
  ],
  "rules": {
    "string-quotes": "double",
    "color-hex-case": "lower",
    "color-hex-length": "short",
    "color-no-invalid-hex": true,
    "number-leading-zero": never,
    "number-no-trailing-zeros": true,
    "function-calc-no-unspaced-operator": true,
    "function-comma-newline-after": "always-multi-line",
    "function-comma-space-after": "always-single-line",
    "function-comma-space-before": "never",
    "function-parentheses-newline-inside": "always-multi-line",
    "function-parentheses-space-inside": "never-single-line",
    "function-whitespace-after": "always",
    "value-no-vendor-prefix": true,
    "value-list-comma-newline-after": "always-multi-line",
    "value-list-comma-space-after": "always-single-line",
    "value-list-comma-space-before": "never",
    "declaration-bang-space-after": "never",
    "declaration-bang-space-before": "always",
    "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-colon-space-after": "always-single-line",
    "declaration-colon-space-before": "never",
    "block-closing-brace-newline-after": [
      "always", {
        "ignoreAtRules": [ "if", "else", "elseif" ]
      }
    ],
    "block-closing-brace-newline-before": "always-multi-line",
    "block-closing-brace-space-before": "always-single-line",
    "block-no-empty": true,
    "block-opening-brace-newline-after": "always-multi-line",
    "block-opening-brace-space-after": "always-single-line",
    "block-opening-brace-space-before": "always",
    "selector-combinator-space-after": "always",
    "selector-combinator-space-before": "always",
    "selector-list-comma-space-before": "never",
    "selector-pseudo-element-colon-notation": "double",
    "declaration-block-no-shorthand-property-overrides": true,
    "declaration-block-trailing-semicolon": "always",
    "declaration-block-no-duplicate-properties": true,
    "media-feature-colon-space-after": "always",
    "media-feature-colon-space-before": "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",
    "media-feature-parentheses-space-inside": "never",
    "at-rule-empty-line-before": [ "always", {
      except: [
        "blockless-after-blockless",
        "blockless-after-same-name-blockless",
        "first-nested",
      ],
      ignore: ["after-comment"],
      "ignoreAtRules": [ "else", "elseif" ]
    } ],
    "indentation": 2,
    "max-empty-lines": 1,
    "no-missing-end-of-source-newline": true,
    "comment-empty-line-before": [ "always", {
      ignore: ["stylelint-commands"],
    } ],
    "comment-whitespace-inside": "always",
    "scss/at-else-closing-brace-newline-after": "always-last-in-chain",
    "scss/at-else-closing-brace-space-after": "always-intermediate",
    "scss/at-else-empty-line-before": "never",
    "scss/at-if-closing-brace-newline-after": "always-last-in-chain",
    "scss/at-if-closing-brace-space-after": "always-intermediate"
  }
}