class RuboCop::Cop::Layout::SpaceInLambdaLiteral

def on_send(node)
  return unless arrow_lambda_with_args?(node)
  if style == :require_space && !space_after_arrow?(node)
    add_offense(node, node.parent.loc.expression, MSG_REQUIRE_SPACE)
  elsif style == :require_no_space && space_after_arrow?(node)
    add_offense(node, node.parent.loc.expression, MSG_REQUIRE_NO_SPACE)
  end
end