.stylelintrc

plugins:
 -
   'stylelint-scss'
rules:
  #
  # Here are all the rules within stylelint, grouped first by category
  # and then by the thing they apply to.
  ##

  #
  # Possible errors
  ##

  # Color
  'color-no-invalid-hex': true

  # Font family
  'font-family-no-duplicate-names': true
  'font-family-no-missing-generic-family-keyword': true

  # Function
  'function-calc-no-unspaced-operator': true
  'function-linear-gradient-no-nonstandard-direction': true

  # String
  'string-no-newline': true

  # Unit
  'unit-no-unknown':
  - true
  - ignoreUnits:
    - "/^[$]/"

  # Property
  'property-no-unknown': true

  # Keyframe declaration
  'keyframe-declaration-no-important': true

  # Declaration block
  'declaration-block-no-duplicate-properties':
  - true
  - ignore:
    - 'consecutive-duplicates-with-different-values'
  'declaration-block-no-shorthand-property-overrides': true

  # Block
  'block-no-empty': true

  # Selector
  'selector-pseudo-class-no-unknown': true
  'selector-pseudo-element-no-unknown': true
  'selector-type-no-unknown': null

  # Media feature
  'media-feature-name-no-unknown': true

  # Comment
  'comment-no-empty': true

  # General / Sheet
  'no-descending-specificity': null
  'no-duplicate-at-import-rules': true
  'no-duplicate-selectors': true
  'no-empty-source': true
  'no-extra-semicolons': true
  'no-invalid-double-slash-comments': true

  #
  # Limit language features
  ##

  #Color
  'color-named': 'never'
  'color-no-hex': null

  # Function
  'function-blacklist': null
  'function-url-no-scheme-relative': true
  'function-url-scheme-blacklist': null
  'function-url-scheme-whitelist': null
  'function-whitelist': null

  # Number
  'number-max-precision': null

  # Time
  'time-min-milliseconds': null

  # Unit
  'unit-blacklist': null
  'unit-whitelist': null

  # Shorthand property
  'shorthand-property-no-redundant-values': true

  # Value
  'value-no-vendor-prefix': null

  # Custom property
  'custom-property-pattern': null

  # Property
  'property-blacklist': null
  'property-no-vendor-prefix': null
  'property-whitelist': null

  # Declaration
  'declaration-block-no-redundant-longhand-properties': null
  'declaration-no-important': null
  'declaration-property-unit-blacklist': null
  'declaration-property-unit-whitelist': null
  'declaration-property-value-blacklist': null
  'declaration-property-value-whitelist': null

  # Declaration block
  'declaration-block-single-line-max-declarations': 1

  # Selector
  'selector-attribute-operator-blacklist': null
  'selector-attribute-operator-whitelist': null
  'selector-class-pattern':
  - '^sprk-((c|o|b|u|is|js|has)-)?([A-Z0-9][a-z0-9]+)+(__([a-z0-9]+-?)*[a-z0-9])?(--([a-z0-9]+-?)*[a-z0-9])?((:{1,2}[A-z]+)?(?!\\@[A-z]+))[a-z](\\@[A-z]+)?(:{1,2}[A-z]+)?$'
  - resolveNestedSelectors:
    - true
  'selector-id-pattern': null
  'selector-max-attribute': null
  'selector-max-class': null
  'selector-max-combinators': null
  'selector-max-compound-selectors': null
  'selector-max-empty-lines': 0
  'selector-max-id': 0
  'selector-max-specificity': null
  'selector-max-type': null
  'selector-max-universal': 1
  'selector-nested-pattern': null
  'selector-no-qualifying-type': null
  'selector-no-vendor-prefix': null
  'selector-pseudo-class-blacklist': null
  'selector-pseudo-class-whitelist': null

  # Media feature
  'media-feature-name-blacklist': null
  'media-feature-name-no-vendor-prefix': null
  'media-feature-name-whitelist': null

  # Custom media
  'custom-media-pattern': null

  # At-rule
  'at-rule-blacklist': null
  'at-rule-no-vendor-prefix': null
  'at-rule-whitelist': null

  # Comment
  'comment-word-blacklist': null

  # General / Sheet
  'max-nesting-depth': 2
  'no-unknown-animations': null

  #
  # Stylistic issues
  ##

  # Color
  'color-hex-case': 'lower'
  'color-hex-length': 'short'

  # Font family
  'font-family-name-quotes': 'always-where-recommended'

  # Font weight
  'font-weight-notation': 'named-where-possible'

  # Function
  'function-comma-newline-after': null
  'function-comma-newline-before': null
  'function-comma-space-after': null
  'function-comma-space-before': 'never'
  'function-max-empty-lines': 0
  'function-name-case': 'lower'
  'function-parentheses-newline-inside': null
  'function-parentheses-space-inside': null
  'function-url-quotes': 'always'
  'function-whitespace-after': 'always'

  # Number
  'number-leading-zero': 'always'
  'number-no-trailing-zeros': true

  # String
  'string-quotes': 'single'

  # Length
  'length-zero-no-unit': true

  # Unit
  'unit-case': 'lower'

  # Value
  'value-keyword-case': null

  # Value list
  'value-list-comma-newline-after': 'always-multi-line'
  'value-list-comma-newline-before': null
  'value-list-comma-space-after': 'always-single-line'
  'value-list-comma-space-before': 'never'
  'value-list-max-empty-lines': 0

  # Custom property
  'custom-property-empty-line-before':
  - 'always'
  - except:
    - 'after-comment'
    - 'after-custom-property'
    - 'first-nested'

  # Property
  'property-case': 'lower'

  # Declaration
  'declaration-bang-space-after': 'never'
  'declaration-bang-space-before': 'always'
  'declaration-colon-newline-after': null
  'declaration-colon-space-after': 'always'
  'declaration-colon-space-before': 'never'
  'declaration-empty-line-before':
  - 'always'
  - except:
    - 'after-comment'
    - 'after-declaration'
    - 'first-nested'

  # Declaration block
  'declaration-block-semicolon-newline-after': 'always'
  'declaration-block-semicolon-newline-before': null
  'declaration-block-semicolon-space-after': 'always-single-line'
  'declaration-block-semicolon-space-before': 'never'
  'declaration-block-trailing-semicolon': 'always'

  # Block
  'block-closing-brace-empty-line-before': 'never'
  'block-closing-brace-newline-after':
  - 'always'
  - ignoreAtRules:
    - 'if'
    - 'else'
  'block-closing-brace-newline-before': 'always'
  'block-closing-brace-space-after': null
  'block-closing-brace-space-before': null
  'block-opening-brace-newline-after': 'always'
  'block-opening-brace-newline-before': null
  'block-opening-brace-space-after': null
  'block-opening-brace-space-before': 'always'

  # Selector
  'selector-attribute-brackets-space-inside': 'never'
  'selector-attribute-operator-space-after': 'never'
  'selector-attribute-operator-space-before': 'never'
  'selector-attribute-quotes': 'always'
  'selector-combinator-space-after': 'always'
  'selector-combinator-space-before': 'always'
  'selector-descendant-combinator-no-non-space': null
  'selector-pseudo-class-case': 'lower'
  'selector-pseudo-class-parentheses-space-inside': 'never'
  'selector-pseudo-element-case': 'lower'
  'selector-pseudo-element-colon-notation': 'double'
  'selector-type-case': 'lower'

  # Selector list
  'selector-list-comma-newline-after': 'always'
  'selector-list-comma-newline-before': 'never-multi-line'
  'selector-list-comma-space-after': null
  'selector-list-comma-space-before': 'never'

  # Rule
  'rule-empty-line-before':
  - 'always-multi-line'
  - except:
    - 'after-single-line-comment'
    - 'first-nested'

  # Media feature
  'media-feature-colon-space-after': 'always'
  'media-feature-colon-space-before': 'never'
  'media-feature-name-case': 'lower'
  'media-feature-parentheses-space-inside': 'never'
  'media-feature-range-operator-space-after': 'always'
  'media-feature-range-operator-space-before': 'always'

  # Media query list
  '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'

  # At-rule
  'at-rule-empty-line-before':
  - 'always'
  - except:
    - 'first-nested'
    - 'after-same-name'
  - ignore:
    - 'after-comment'
  'at-rule-name-case': 'lower'
  'at-rule-name-newline-after': null
  'at-rule-name-space-after': 'always'
  'at-rule-semicolon-newline-after': 'always'
  'at-rule-semicolon-space-before': 'never'

  # Comment
  'comment-empty-line-before':
  - 'always'
  - except:
    - 'first-nested'
  - ignore:
    - 'stylelint-commands'
  'comment-whitespace-inside': 'always'

  # General / Sheet
  'indentation': 2
  'max-empty-lines': 1
  'max-line-length': null
  'no-eol-whitespace': true
  'no-missing-end-of-source-newline': true

  #
  # Scss
  ##

  # At-rule
  'scss/at-else-closing-brace-newline-after': null
  'scss/at-else-closing-brace-space-after': null
  'scss/at-else-empty-line-before': null
  'scss/at-else-if-parentheses-space-before': 'always'

  # At-extend
  'scss/at-extend-no-missing-placeholder': true

  # At-function
  'scss/at-function-named-arguments':
  - 'always'
  - ignore:
    - 'single-argument'
  'scss/at-function-parentheses-space-before': 'never'
  'scss/at-function-pattern': null

  # At-if
  'scss/at-if-closing-brace-newline-after': null
  'scss/at-if-closing-brace-space-after': null

  # At-import
  'scss/at-import-no-partial-leading-underscore': true
  'scss/at-import-partial-extension-blacklist':
  - '.scss'
  - '.sass'
  - '.less'
  - '.stylus'
  'scss/at-import-partial-extension-whitelist': null

  # At-mixin
  'scss/at-mixin-argumentless-call-parentheses': 'never'
  'scss/at-mixin-named-arguments': 'always'
  'scss/at-mixin-parentheses-space-before': 'never'
  'scss/at-mixin-pattern':
  - '^([A-Z0-9][a-z0-9]+)+(__([a-z0-9]+-?)*[a-z0-9])?(--([a-z0-9]+-?)*[a-z0-9])?$'

  # At-rule
  'scss/at-rule-no-unknown': true

  # Variables
  'scss/dollar-variable-colon-newline-after': null
  'scss/dollar-variable-colon-space-after': 'always-single-line'
  'scss/dollar-variable-colon-space-before': 'never'
  'scss/dollar-variable-empty-line-before':
  - always
  - except:
    - 'first-nested'
    - 'after-comment'
    - 'after-dollar-variable'
  'scss/dollar-variable-no-missing-interpolation': true
  'scss/dollar-variable-pattern':
  - '^(sprk)(-[\w]+)+$'

  # Placeholders
  'scss/percent-placeholder-pattern':
  - '^([A-Z0-9][a-z0-9]+)+(__([a-z0-9]+-?)*[a-z0-9])?(--([a-z0-9]+-?)*[a-z0-9])?$'

  # Comment
  'scss/double-slash-comment-empty-line-before': null

  # Declaration
  'scss/declaration-nested-properties': 'never'
  'scss/declaration-nested-properties-no-divided-groups': null

  # Media feature
  'scss/media-feature-value-dollar-variable': null

  # Operator
  'scss/operator-no-newline-after': null
  'scss/operator-no-newline-before': null
  'scss/operator-no-unspaced': true

  # Partial
  'scss/partial-no-import': null

  # Selector
  'scss/selector-no-redundant-nesting-selector': true