title: eslint - no-unused-vars warning persists despite correct .eslintrc.json setting
body: <p>I have a an .eslintrc.json file whose rules my code is obeying. Except the &quot;no-unused-vars&quot; rule.</p>
  <p>It works in my editor, that is, the unused vars are no longer highlighted red, but when I run the app in the console the console throws the warning. It's like they're using two separate configs or something. It's a create-react-app.</p>