title: I want to use the Babel plug-in: optional-chaining, but the vscode console prompted me incorrectly. How can I solve this problem?
body: <p>I created a new project with the create-react-app scaffold, and then I wanted to use the optional-chaining plug-in of babel. I installed the package according to the document and configured it, but vscode prompted grammatical errors. What can help me? please.</p>
  
  <ol>
  <li>this is my <a href="https://i.stack.imgur.com/fYaDh.png" rel="nofollow noreferrer">package.json</a>.</li>
  <li>this is the problem:
  <a href="https://i.stack.imgur.com/NogJv.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NogJv.png" alt="enter image description here"></a></li>
  </ol>