class RuboCop::Cop::Style::Dir

path = __dir__
# good
path = File.dirname(File.realpath(__FILE__))
# bad
path = File.expand_path(File.dirname(__FILE__))
# bad
@example
current file.
complex constructs to retrieve a canonicalized absolute path to the
Checks for places where the ‘#_dir_` method can replace more

def file_keyword?(node) 

def file_keyword?(node)
  node.str_type? && node.source_range.is?('__FILE__')
end

def on_send(node) 

def on_send(node)
  dir_replacement?(node) do
    add_offense(node) do |corrector|
      corrector.replace(node, '__dir__')
    end
  end
end