.stylelintrc.js

module.exports = {
  "ignoreFiles": ["**/*.js", "public/*", "dist/*", "build/*"],
  "plugins": [
    "stylelint-order"
  ],
  "extends": [
    // https://github.com/stylelint/stylelint-config-standard
    "stylelint-config-standard",
    // https://github.com/kristerkari/stylelint-config-recommended-scss
    "stylelint-config-recommended-scss",
  ],
  "rules": {
    // https://stylelint.io/user-guide/rules/list
    "max-empty-lines": 2,
    "declaration-empty-line-before": null,
    "function-name-case": null,
    "selector-pseudo-class-no-unknown": [
      true,
      {
        // https://stylelint.io/user-guide/rules/selector-pseudo-class-no-unknown#ignorepseudoclasses-regex-string
        "ignorePseudoClasses": [
          // https://svelte.dev/docs#style
          "global",
        ]
      }
    ],
    "order/order": [
      "at-rules", // Nested at-rules (e. g., div { @media () {} })
      "dollar-variables", //  (e. g., $variable)
      "custom-properties", // (e. g., --property: 10px;)
      "declarations", //  (e. g., display: block)
      "at-variables", //  (e. g., @variable available in Less syntax)
      "rules", // Nested rules (e. g., a { span {} })
      // "less-mixins", // Mixins in Less syntax (e. g., .mixin();)
    ],
    // https://github.com/hudochenkov/stylelint-order
    "order/properties-order": [
      [
        // https://www.tagindex.com/stylesheet/properties/
        // https://fromkato.com/webdev/css/properties
        // https://www.tutorialrepublic.com/css-reference/css3-properties.php
        {
          "groupName": "content",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "content",
            "quotes",
            "counter-reset",
            "counter-increment",
          ],
        },
        {
          "groupName": "dimensions",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "width",
            "height",
            "max-width",
            "min-width",
            "max-height",
            "min-height",
            "margin",
            "margin-top",
            "margin-right",
            "margin-bottom",
            "margin-left",
            "padding",
            "padding-top",
            "padding-right",
            "padding-bottom",
            "padding-left",
          ],
        },
        {
          "groupName": "transform",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "transform",
            "transform-origin",
            "transform-style",
            "perspective",
            "perspective-origin",
            "backface-visibility",
          ],
        },
        {
          "groupName": "display",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "box-sizing",
            "resize",
            "position",
            "top",
            "right",
            "bottom",
            "left",
            "overflow",
            "overflow-x",
            "overflow-y",
            "visibility",
            "display",
            "clip",
            "float",
            "clear",
            "z-index",
            "direction",
            "unicode-bidi",
          ],
        },
        {
          "groupName": "flexbox & Grid",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "flex-flow",
            "flex-direction",
            "flex-wrap",
            "grid-template",
            "grid-template-rows",
            "grid-template-columns",
            "grid-template-areas",
            "grid-gap",
            "grid-auto-rows",
            "grid-auto-columns",
            "grid-auto-flow",
            "justify-content",
            "align-items",
            "align-content",
            // children
            "order",
            "flex",
            "flex-grow",
            "flex-shrink",
            "flex-basis",
            "align-self",
            "grid-area",
            "grid-column",
            "grid-column-end",
            "grid-column-gap",
            "grid-column-start",
            "grid-row",
            "grid-row-end",
            "grid-row-gap",
            "grid-row-start",
          ],
        },
        {
          "groupName": "radius",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "border-radius",
            "border-top-left-radius",
            "border-top-right-radius",
            "border-bottom-right-radius",
            "border-bottom-left-radius",
          ],
        },
        {
          "groupName": "border",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "border",
            "border-top",
            "border-right",
            "border-bottom",
            "border-left",
            "border-width",
            "border-top-width",
            "border-right-width",
            "border-bottom-width",
            "border-left-width",
            "border-style",
            "border-top-style",
            "border-right-style",
            "border-bottom-style",
            "border-left-style",
            "border-color",
            "border-top-color",
            "border-right-color",
            "border-bottom-color",
            "border-left-color",

            "border-image",
            "border-image-outset",
            "border-image-repeat",
            "border-image-slice",
            "border-image-source",
            "border-image-width",
          ],
        },
        {
          "groupName": "color",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "color",
            "opacity",
            "background",
            "background-color",
            "background-image",
            "background-repeat",
            "background-position",
            "background-attachment",
            "background-clip",
            "background-origin",
            "background-size",
            "box-shadow",
          ],
        },
        {
          "groupName": "animation",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "animation",
            "animation-delay",
            "animation-direction",
            "animation-duration",
            "animation-fill-mode",
            "animation-iteration-count",
            "animation-name",
            "animation-play-state",
            "animation-timing-function",

            "transition",
            "transition-delay",
            "transition-duration",
            "transition-property",
            "transition-timing-function",
          ],
        },
        {
          "groupName": "font & text",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "font",
            "font-size",
            "font-size-adjust",
            "font-weight",
            "font-style",
            "font-family",
            "font-variant",
            "font-variant-caps",
            "font-variant-ligatures",
            "font-variant-alternates",
            "font-variant-position",
            "font-variant-numeric",
            "font-variant-east-asian",
            "font-stretch",
            "text-align",
            "text-align-last",
            "vertical-align",
            "line-height",
            "text-justify",
            "text-overflow",
            "text-shadow",
            "text-decoration",
            "text-decoration-color",
            "text-decoration-line",
            "text-decoration-style",
            "text-indent",
            "tab-size",
            "text-transform",
            "letter-spacing",
            "word-spacing",
            "white-space",
            "word-break",
            "word-wrap",
            "overflow-wrap",
          ],
        },
        {
          "groupName": "column layout",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "columns",
            "column-count",
            "column-fill",
            "column-gap",
            "column-rule",
            "column-rule-color",
            "column-rule-style",
            "column-rule-width",
            "column-span",
            "column-width",
          ],
        },
        {
          "groupName": "list",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "list-style",
            "list-style-type",
            "list-style-position",
            "list-style-image",
          ],
        },
        {
          "groupName": "table",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "table-layout",
            "border-collapse",
            "border-spacing",
            "empty-cells",
            "caption-side",
          ],
        },
        {
          "groupName": "outline",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "outline",
            "outline-width",
            "outline-color",
            "outline-style",
            "outline-offset",
          ],
        },
        {
          "groupName": "print",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "break-before",
            "break-after",
            "break-inside",
            // old
            "page-break-before",
            "page-break-after",
            "page-break-inside",
          ],
        },
        {
          "groupName": "cursor",
          "emptyLineBefore": "always",
          "noEmptyLineBetween": true,
          "properties": [
            "cursor",
            "user-select",
            "pointer-events",
          ],
        },
      ],
      {
        "unspecified": "bottomAlphabetical",
        "emptyLineBeforeUnspecified": "threshold",
        "emptyLineMinimumPropertyThreshold": 4,
      },
    ]
  },
}