.scss-lint.yaml

linters:

  # Include one space before any ! and no spaces after it, with `!important` and
  # `!default` declarations
  BangFormat:
    enabled: true
    space_before_bang: true
    space_after_bang: false

  # 'border: none' is ok
  BorderZero:
    enabled: true
    convention: none

  # Prefer hexadecimal color codes over color keywords
  ColorKeyword:
    enabled: true

  # Don't prefer color literals (keywords or hexadecimal codes) to be used only
  # in variable declarations
  ColorVariable:
    enabled: false

  # Allow both // and /**/ comments types
  Comment:
    enabled: false

  # Disallow "@debug"
  DebugStatement:
    enabled: true

  # @extend must come first, then properties, then nested rulesets
  DeclarationOrder:
    enabled: true

  # Disallow use of the same property more than once in the same ruleset
  DuplicateProperty:
    enabled: true

  # Place @else statements on the same line as the preceding curly brace
  ElsePlacement:
    enabled: true
    style: same_line

  # Require an empty line between rulesets
  EmptyLineBetweenBlocks:
    enabled: true
    ignore_single_line_blocks: false

  # Disallow empty rulesets
  EmptyRule:
    enabled: true

  # Require a newline at the end of the file
  FinalNewline:
    enabled: true
    present: true

  # Use the shortest possible hex value. #fff instead of #ffffff, #0099aa = #09a
  HexLength:
    enabled: true
    style: short

  # Require hex colors to be lowercase (if they include any of the letters a-f)
  HexNotation:
    enabled: true
    style: lowercase

  # Ensure hexadecimal colors are valid (either three or six digits).
  HexValidation:
    enabled: true

  # Never use ID selectors
  IdSelector:
    enabled: true

  # Allow `!important` (we need this for itcss trumps layer)
  ImportantRule:
    enabled: false

  # Do not include leading underscores or filename extensions in the basenames
  # of SCSS files that you import
  ImportPath:
    enabled: true
    leading_underscore: false
    filename_extension: false

  # Use spaces for indentation
  Indentation:
    enabled: true
    allow_non_nested_indentation: true
    character: space
    width: 4

  # Do not include leading zero before decimal values less than 1
  LeadingZero:
    enabled: true
    style: exclude_zero

  # Disallow more than one ruleset with the same selector in the same file
  MergeableSelector:
    enabled: enable
    force_nesting: true

  # Functions, mixins, and variables should be declared with all lowercase
  # letters and hyphens instead of underscores
  NameFormat:
    enabled: true
    convention: hyphenated_lowercase

  # Limit nesting depth
  NestingDepth:
    enabled: true
    max_depth: 4

  # @extend %placeholders, don't @extend .a-class
  PlaceholderInExtend:
    enabled: true

  # Limit the number of properties in a rule set
  PropertyCount:
    enabled: false

  # Don't require properties to be in alphabetical order (also possible to
  # specify a specific order)
  PropertySortOrder:
    enabled: false

  # Disallow unknown CSS property names
  PropertySpelling:
    enabled: true
    extra_properties: []

  # Configure which units are allowed for property values
  PropertyUnits:
    enabled: false

  # Do not qualify type selectors
  QualifyingElement:
    enabled: true
    allow_element_with_attribute: false
    allow_element_with_class: false
    allow_element_with_id: false

  # Limit selector depth
  SelectorDepth:
    enabled: true
    max_depth: 4

  # Class convention as per Csswizardry flavour of BEM
  # http://csswizardry.com/2013/01/mindbemding-getting-your-head-round-bem-syntax/
  SelectorFormat:
    enabled: true
    convention: hyphenated_lowercase
    class_convention: '^[a-z]([a-z0-9](_{2}[a-z0-9])?(\-{0,2})?)*[a-z0-9]$'
    placeholder_convention: '^[a-z]([a-z0-9](_{2}[a-z0-9])?(\-{0,2})?)*[a-z0-9]$'
    convention_explanation: should be written in lowercase with hyphens
    class_convention_explanation: should be written in hyphenated BEM (Block Element Modifier) format
    placehloder_convention_explanation: should be written in hyphenated BEM (Block Element Modifier) format

  # margin: 1px not margin: 1px 1px 1px 1px;
  Shorthand:
    enabled: true

  # Only one property per line
  SingleLinePerProperty:
    enabled: true
    allow_single_line_rule_sets: false

  # Rulesets with multiple (comma delimited) selectors must have each selector
  # on a separate line
  SingleLinePerSelector:
    enabled: true

  # rgb(0,0,0) not rgb(0, 0, 0)
  SpaceAfterComma:
    enabled: false

  # margin: 0px not margin:0px
  SpaceAfterPropertyColon:
    enabled: true

  # margin: 0px not margin : 0px
  SpaceAfterPropertyName:
    enabled: true

  # Opening braces should be preceded by a single space
  SpaceBeforeBrace:
    enabled: true
    allow_single_line_padding: false

  # rgb(0,0,0) not rgb( 0,0,0 )
  SpaceBetweenParens:
    enabled: true
    spaces: 0

  # Use single quotes, not double quotes
  StringQuotes:
    enabled: true
    style: single_quotes

  # Every property value must end with a semicolon
  TrailingSemicolon:
    enabled: true

  # Do not include unnecessary trailing zeros after a decimal point. 2em instead
  # of 2.0em
  TrailingZero:
    enabled: true

  # No unnecessary fractions: 1 not 1.0
  UnnecessaryMantissa:
    enabled: true

  # Do not use parent selector references (&) when they would otherwise be
  # unnecessary
  UnnecessaryParentReference:
    enabled: true

  # URLs should not contain protocols or domain names
  UrlFormat:
    enabled: true

  # url('example.com') not url(example.com)
  UrlQuotes:
    enabled: true

  # Don't prefer literals to be used only in variable declarations
  VariableForProperty:
    enabled: false

  # We'll change this when we switch from compass to autoprefixr
  VendorPrefix:
    enabled: false

  # No units on zero values: 0 not 0px
  ZeroUnit:
    enabled: true