yarn installでこれが出たら「eslint-config-react-app@2.1.0″ has incorrect peer dependency “eslint@^4.1.1」
yarn installでこれが出たら「eslint-config-react-app@2.1.0" has incorrect peer dependency "eslint@^4.1.1」 please see document There is a writting as section 「out side creat-react-app」 according to it, npm install --save-dev eslint-conf...