chore(eslint): import https://github.com/karen-irc/karen/blob/5bb0503/tools/eslint/eslintrc_core.js
chore(eslint): import https://github.com/karen-irc/karen/blob/5bb0503/tools/eslint/eslintrc_core.js

saneyuki/option-t.js,saneyuki/option-t.js