title: How to add es2020 features to existing react app?
body: <p>I want to use the new features of es2020 in my react app.
  Tried to install <code>npm install --save-dev babel-preset-es2020</code> and added <code>.babelrc</code> file with</p>
  <pre><code>{
    &quot;presets&quot;: [&quot;es2020&quot;]
  }
  </code></pre>
  <p>However it still doesn't work.
  How to set up the new features of es2020 with a react app?</p>