class RuboCop::Cop::Rails::EnvironmentComparison

def on_send(node)
  if (env_node = comparing_str_env_with_rails_env_on_lhs?(node) ||
                 comparing_str_env_with_rails_env_on_rhs?(node))
    env, = *env_node
    bang = node.method?(:!=) ? '!' : ''
    message = format(MSG, bang: bang, env: env, source: node.source)
    add_offense(node, message: message) do |corrector|
      autocorrect(corrector, node)
    end
  end
  return unless comparing_sym_env_with_rails_env_on_lhs?(node) || comparing_sym_env_with_rails_env_on_rhs?(node)
  add_offense(node, message: SYM_MSG) do |corrector|
    autocorrect(corrector, node)
  end
end