The SASS and CoffeeScript linting files that I use

coffeelint.json

{
  "no_backticks": {
    "level" : "ignore"
  },

  "no_tabs" : {
    "level" : "error"
  },

  "no_trailing_whitespace" : {
    "level" : "ignore"
  },

  "max_line_length" : {
    "value": 120,
    "level" : "ignore"
  },

  "camel_case_classes" : {
    "level" : "error"
  },

  "indentation" : {
    "value" : 4,
    "level" : "error"
  },

  "no_implicit_braces" : {
    "level" : "ignore"
  },

  "no_implicit_parens" : {
    "level" : "error"
  },

  "no_trailing_semicolons" : {
    "level" : "error"
  },

  "no_plusplus" : {
    "level" : "ignore"
  },

  "no_throwing_strings" : {
    "level" : "error"
  },

  "cyclomatic_complexity" : {
    "value" : 11,
    "level" : "ignore"
  },

  "line_endings" : {
    "value" : "unix",
    "level" : "error"
  },

  "non_empty_constructor_needs_parens" : {
    "level" : "error"
  },

  "duplicate_key" : {
    "level" : "error"
  },

  "no_unnecessary_fat_arrows" : {
      "level" : "ignore"
  },

  "" : {
    "level" : "error"
  }


}

scss-lint.yml

linters:
    BangFormat:
        enabled: yes
        severity: error
        space_before_bang: yes
        space_after_bang: no
    BorderZero:
        enabled: yes
        severity: error
    ColorKeyword:
        enabled: yes
        severity: error
    Comment:
        enabled: yes
        severity: error
    DebugStatement:
        enabled: yes
        severity: error
    DeclarationOrder:
        enabled: yes
        severity: error
    DuplicateProperty:
        enabled: yes
        severity: error
    ElsePlacement:
        enabled: yes
        severity: error
    EmptyLineBetweenBlocks:
        enabled: yes
        severity: error
        ignore_single_line_blocks: yes
    EmptyRule:
        enabled: yes
        severity: error
    FinalNewline:
        enabled: yes
        severity: error
    HexLength:
        enabled: yes
        severity: error
        style: long
    HexNotation:
        enabled: yes
        severity: error
        style: lowercase
    HexValidation:
        enabled: yes
        severity: error
    IdSelector:
        enabled: yes
        severity: error
    ImportPath:
        enabled: yes
        severity: error
    Indentation:
        enabled: yes
        severity: error
        character: space
        width: 4
    LeadingZero: # TODO: Check into this
        enabled: yes
        severity: error
        style: include_zero
    MergeableSelector:
        enabled: yes
        severity: error
        force_nesting: true
    NameFormat:
        enabled: yes
        severity: error
        convention: hyphenated_lowercase
    NestingDepth:
        enabled: no
        severity: error
        max_depth: 5
    PlaceholderInExtend:
        enabled: yes
        severity: error
    PropertySortOrder:
        enabled: yes
        severity: error
        order: concentric
    PropertySpelling:
        enabled: yes
        severity: error
    QualifyingElement:
        enabled: yes
        severity: error
    SelectorDepth:
        enabled: no
        severity: error
        max_depth: 5
    SelectorFormat:
        enabled: yes
        severity: error
        convention: hyphenated_lowercase
    Shorthand:
        enabled: yes
        severity: error
    SingleLinePerProperty:
        enabled: yes
        severity: error
        allow_single_line_rule_sets: yes
    SingleLinePerSelector:
        enabled: yes
        severity: error
    SpaceAfterComma:
        enabled: yes
        severity: error
    SpaceAfterPropertyColon:
        enabled: yes
        severity: error
        style: one_space
    SpaceAfterPropertyName:
        enabled: yes
        severity: error
    SpaceBeforeBrace:
        enabled: yes
        severity: error
        style: one_space
    SpaceBetweenParens:
        enabled: yes
        severity: error
        spaces: 0
    StringQuotes:
        enabled: yes
        severity: error
        style: single_quotes
    TrailingSemicolon:
        enabled: yes
        severity: error
    TrailingZero:
        enabled: yes
        severity: error
    UnnecessaryMantissa: # 1.0 vs 1
        enabled: yes
        severity: error
    UnnecessaryParentReference:
        enabled: yes
        severity: error
    UrlFormat:
        enabled: yes
        severity: error
    UrlQuotes:
        enabled: yes
        severity: error
    # We use vendor prefixes in _vendor.scss.
    # scss-lint has file-level checks in HEAD, but it's too new
    # to use it here (it's not in the current gem version)
    # @TODO: add this back in when file-based checks are in the gem
    # commit: https://github.com/causes/scss-lint/commit/6959dc6c6ed97a2b3bac3960d2472d008f45b7d8
    #---
    VendorPrefixes:
        enabled: no #yes
        severity: error
        identifier_list: base
    ZeroUnit:
        enabled: yes
        severity: error