daimon-deka

daimon-deka is a RuboCop configuration gem.

"daimon" is "大門駅 (東京都) - Wikipedia". "deka" means "cop" in Japanese slang.

See also https://ja.wikipedia.org/wiki/%E8%A5%BF%E9%83%A8%E8%AD%A6%E5%AF%9F