class Listen::Event::Queue

def <<(args)
  type, change, dir, path, options = *args
  fail "Invalid type: #{type.inspect}" unless [:dir, :file].include? type
  fail "Invalid change: #{change.inspect}" unless change.is_a?(Symbol)
  fail "Invalid path: #{path.inspect}" unless path.is_a?(String)
  dir = if @config.relative?
    _safe_relative_from_cwd(dir)
  else
    dir
  end
  @event_queue << [type, change, dir, path, options]
end

def _safe_relative_from_cwd(dir)
  dir.relative_path_from(Pathname.pwd)
rescue ArgumentError
  dir
end

def initialize(config)
  @event_queue = ::Queue.new
  @config = config
end