.stylelintrc.yml

# See https://github.com/stylelint/stylelint/blob/master/docs/user-guide/rules.md
# Also https://github.com/kristerkari/stylelint-scss#list-of-rules

extends: stylelint-config-recommended
plugins: stylelint-scss

ignoreFiles:
  - '**/*.js'

rules:
  at-rule-no-unknown: null
  scss/at-rule-no-unknown: true

  # possible errors (these are all on by default)
  no-descending-specificity: null

  # limit language features
  at-rule-no-vendor-prefix: true
  color-named: always-where-possible
  declaration-block-no-redundant-longhand-properties:
    - true
    - ignoreShorthands:
        - grid-template
  declaration-block-single-line-max-declarations: 1
  declaration-no-important: true
  function-url-no-scheme-relative: true
  media-feature-name-no-vendor-prefix: true
  property-no-vendor-prefix: true
  selector-max-empty-lines: 0
  selector-no-vendor-prefix: true
  shorthand-property-no-redundant-values: true
  value-no-vendor-prefix: true

  # stylistic issues
  at-rule-name-case: lower
  at-rule-name-space-after: always
  at-rule-semicolon-space-before: never
  color-hex-case: lower
  color-hex-length: short
  comment-whitespace-inside: always
  declaration-bang-space-after: never
  declaration-bang-space-before: always
  font-family-name-quotes: always-unless-keyword
  font-weight-notation: named-where-possible
  function-max-empty-lines: 1
  function-name-case: lower
  function-url-quotes: always
  indentation: null
  length-zero-no-unit: true
  max-empty-lines: 2
  media-feature-colon-space-after: always
  media-feature-colon-space-before: never
  media-feature-name-case: lower
  media-feature-parentheses-space-inside: never
  media-query-list-comma-space-after: always
  media-query-list-comma-space-before: never
  no-eol-whitespace: true
  no-missing-end-of-source-newline: true
  number-leading-zero: always
  number-no-trailing-zeros: true
  property-case: lower
  selector-attribute-brackets-space-inside: never
  selector-attribute-quotes: always
  selector-combinator-space-after: always
  selector-combinator-space-before: always
  selector-descendant-combinator-no-non-space: true
  selector-list-comma-newline-after: always
  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
  unit-case: lower
  value-keyword-case: lower
  value-list-max-empty-lines: 1