Sass-lint configuration for Symfony 4

.sass-lint.yml

##
# Sass-lint configuration using rather strict rules
#
# Rules: https://github.com/sasstools/sass-lint/tree/master/docs/rules
#
# Author: WebberTakken <webber@takken.io>
##
options:
  formatter: stylish
  merge-default-rules: false

files:
  include: 'assets/**/*.s+(a|c)ss'

rules:
  # Extends
  extends-before-mixins: 2
  extends-before-declarations: 2
  placeholder-in-extend: 2

  # Mixins
  mixins-before-declarations: 2

  # Line Spacing
  one-declaration-per-line: 2
  empty-line-between-blocks: 2
  single-line-per-selector: 2

  # Disallows
  no-attribute-selectors: 0
  no-color-hex: 0
  no-color-keywords: 0
  no-color-literals: 0
  no-combinators: 0
  no-css-comments: 0
  no-debug: 2
  no-disallowed-properties: 0
  no-duplicate-properties: 2
  no-empty-rulesets: 2
  no-extends: 0
  no-ids: 0
  no-important: 1
  no-invalid-hex: 2
  no-mergeable-selectors: 2
  no-misspelled-properties: 2
  no-qualifying-elements:
    - 2
    - allow-element-with-id: 2
  no-trailing-whitespace: 2
  no-trailing-zero: 2
  no-transition-all: 2
  no-universal-selectors: 0
  no-url-domains: 2
  no-url-protocols: 2
  no-vendor-prefixes: 2
  no-warn: 0
  property-units:
    - 2
    - global: ['em', 'rem', 'px', '%', 'vh', 'vw', 's']

  # Nesting
  declarations-before-nesting: 2
  force-attribute-nesting: 2
  force-element-nesting: 0
  force-pseudo-nesting: 0

  # Name Formats
  class-name-format: 2
  function-name-format: 2
  id-name-format: 0
  mixin-name-format: 2
  placeholder-name-format: 2
  variable-name-format: 2

  # Style Guide
  attribute-quotes: 2
  bem-depth: 0
  border-zero: 2
  brace-style: 2
  clean-import-paths: 2
  empty-args: 2
  hex-length:
    - 2
    - style: 'long'
  hex-notation: 2
  indentation: 2
  leading-zero: 2
  max-line-length: 0
  max-file-line-count: 0
  nesting-depth: 2
  property-sort-order:
    - 2
    - order: 'concentric-css'
  pseudo-element: 2
  quotes: 0
  shorthand-values: 2
  url-quotes: 2
  variable-for-property: 2
  zero-unit: 2

  # Inner Spacing
  space-after-comma: 2
  space-before-colon: 2
  space-after-colon: 2
  space-before-brace: 2
  space-before-bang: 2
  space-after-bang: 2
  space-between-parens: 2
  space-around-operator: 2

  # Final Items
  trailing-semicolon: 0
  final-newline: 2