.stylelintrc.yml

defaultSeverity: warning
extends:
    - stylelint-config-standard
    - stylelint-config-recommended
    - stylelint-config-sass-guidelines
plugins:
    - stylelint-scss
rules:
    # Line Spacing
    rule-empty-line-before:
        - always-multi-line
        - ignore:
            - after-comment
            - first-nested
            - inside-block

    # Disallows
    selector-max-id: 2
    comment-no-empty: true
    declaration-block-no-duplicate-properties: true
    block-no-empty:
        - true
        - ignore:
            - comments
    no-descending-specificity: null
    no-extra-semicolons: true
    color-no-invalid-hex: true
    number-no-trailing-zeros: true
    length-zero-no-unit: true
    scss/at-extend-no-missing-placeholder: null
    selector-no-qualifying-type:
        - true
        - ignore:
            - attribute
            - class
            - id
    property-no-unknown:
        - true
        - ignoreProperties:
            - 'box-orient'
        - ignoreAtRules: ['each', 'else', 'extend', 'for', 'function', 'if', 'include', 'mixin', 'return', 'while']

    # Nesting
    max-nesting-depth:
        - 5
        - ignore: ['blockless-at-rules', 'pseudo-classes']

    # Name Formats
    selector-class-pattern: null
    scss/at-mixin-pattern: null

    # Style Guide
    indentation: 2
    color-named: 'never'
    declaration-block-trailing-semicolon: always
    unit-case: lower
    color-hex-case: lower
    number-leading-zero: always
    unit-no-unknown:
        - true
        - ignoreUnits:
            - /^[-+][\d$(]/
    font-family-no-duplicate-names: true
    string-quotes: single
    selector-max-compound-selectors: 6
    order/order: null

    # Inner Spacing
    function-calc-no-unspaced-operator: true
    declaration-block-semicolon-newline-after: always
    block-opening-brace-space-before: always
    block-opening-brace-newline-after: always
    block-closing-brace-newline-after: always
    declaration-bang-space-after: never
    declaration-colon-space-after: always

    # Final Items
    scss/at-import-partial-extension-blacklist: [/css/]