title: `Property 'ethereum' does not exist on type 'Window & typeof globalThis'` error in React
body: <p>I am getting the</p>
  <blockquote>
  <p>Property 'ethereum' does not exist on type 'Window &amp; typeof globalThis'</p>
  </blockquote>
  <p>error in React. This is the line generating the issue:</p>
  <pre><code>import { ethers } from 'ethers'
  
  const provider = new ethers.providers.Web3Provider(window.ethereum);
  </code></pre>
  <p>Any idea of what could be happening?</p>