１．eslintのinstall

# npm install eslint --save-dev
npm notice Run npm install -g npm@8.7.0 to update!

２．npmのupdate

# npm install -g npm@8.7.0

３．eslintのsetup

# npm init @eslint/config

４．install場所

# which eslint
/usr/local/bin/eslint

５．使い方
(1) 全て

# eslint filename