rules.yml

custom_rules:
  equals_to_self:
    name: "Equals to self"
    regex: "(^|[\\h])([$.\\w]+)([\\h]*[=]{2,}[\\h]*)\\2([\\s]+)"
    message: "Expression always returns true, please fix typo"
    match_kinds:
      - argument
      - identifier
      - keyword
      - number
      - objectliteral
      - parameter
      - placeholder
      - typeidentifier
  extension_mark:
    name: "Extension mark"
    regex: "^([\\h]*[\\/]{2}[\\h]*MARK[:\\h-]+)([\\w]+)[\\s]+(extension[\\h]+[\\w]+[\\h]*:[\\h]*)(?!\\2[\\h]*[\\{])([\\w]+[\\s]*[\\{])"
    message: "Extension mark should contain same protocol name"
  double_whitespace:
    name: "Double whitespace"
    regex: "(?<!^)(\\b[\\h]{2,})"
    message: "Expression contains double whitespace, please fix typo"
    match_kinds:
      - argument
      - identifier
      - keyword
      - number
      - objectliteral
      - parameter
      - placeholder
      - typeidentifier
  c_style_comment:
    name: "C-style comment"
    regex: '\/\*([^"*]+)\*\/'
    message: "Avoid C-style comments, use `//` instead"
  explicit_return_in_closure:
    name: "Explicit return in closure"
    regex: "(^)?(\\bin\\b)([\\s]+)(\\breturn\\b.+)[\\s]+[\\}]"
    message: "Unnecessary return in single-expression closure"
  unwrapping_self:
    name: "Unwrapping self"
    regex: "\\b(var|let)([\\h]+)(`self`|strongSelf)([\\h]*=[\\h]*)(self|weakSelf)"
    message: "Please unwrap self as `self = self