.stylelintrc.yml

---
plugins:
    - stylelint-scss
extends:
    - stylelint-config-standard
    - stylelint-config-recommended-scss
ignoreFiles: []
rules:
    # https://stylelint.io/user-guide/rules/at-rule-empty-line-before
    at-rule-empty-line-before:
        - always
        - ignore:
              - after-comment
              - first-nested
              - blockless-after-blockless
        - ignoreAtRules:
              - else
              - else if

    # https://stylelint.io/user-guide/rules/block-closing-brace-newline-after
    block-closing-brace-newline-after:
        - always

    # https://stylelint.io/user-guide/rules/color-hex-length
    color-hex-length: long

    # https://stylelint.io/user-guide/rules/font-family-name-quotes
    font-family-name-quotes: always-unless-keyword

    # https://stylelint.io/user-guide/rules/declaration-block-single-line-max-declarations
    declaration-block-single-line-max-declarations: 1

    indentation: 4

    # https://stylelint.io/user-guide/rules/no-descending-specificity
    # FIXME: To ensure a good coherence, this should be enabled
    no-descending-specificity: null

    # https://stylelint.io/user-guide/rules/selector-class-pattern
    selector-class-pattern:
        - '^[-_a-z0-9]+(?:(-{1,2}|_{1,2})[a-z0-9]+)*$'
        - resolveNestedSelectors: true

    # https://stylelint.io/user-guide/rules/selector-id-pattern
    selector-id-pattern: '^[a-z]+(?:-[a-z]*)*$'

    # https://stylelint.io/user-guide/rules/selector-list-comma-newline-after
    selector-list-comma-newline-after: always

    # https://stylelint.io/user-guide/rules/selector-list-comma-newline-before
    selector-list-comma-newline-before: never-multi-line

    # https://stylelint.io/user-guide/rules/selector-list-comma-space-after
    selector-list-comma-space-after: always-single-line

    # https://stylelint.io/user-guide/rules/selector-list-comma-space-before
    selector-list-comma-space-before: never

    # https://stylelint.io/user-guide/rules/selector-max-id
    selector-max-id: 0

    # https://stylelint.io/user-guide/rules/selector-type-no-unknown
    selector-type-no-unknown:
        - true

    # https://github.com/kristerkari/stylelint-scss/blob/master/src/rules/double-slash-comment-empty-line-before/README.md
    scss/double-slash-comment-empty-line-before:
        - always
        - ignore:
              - between-comments
              - stylelint-commands

    # https://github.com/kristerkari/stylelint-scss/blob/master/src/rules/double-slash-comment-whitespace-inside/README.md
    scss/double-slash-comment-whitespace-inside: always

    # https://github.com/kristerkari/stylelint-scss/blob/master/src/rules/media-feature-value-dollar-variable/README.md
    scss/media-feature-value-dollar-variable: always

    # https://github.com/kristerkari/stylelint-scss/blob/master/src/rules/no-duplicate-dollar-variables/README.md
    scss/no-duplicate-dollar-variables:
        - true
        - ignoreInsideAtRules:
              - mixin
              - if
              - else