For a file which contians lots of lines of code, we can use 'comments region' to collapse the code.
import "./styles.css"; // #region setup document.getElementById("app").innerHTML = ` <h1>Hello Vanilla!</h1> <div> We use Parcel to bundle this sandbox, you can find more info about Parcel <a href="https://parceljs.org" target="_blank" rel="noopener noreferrer">here</a>. </div> `; // #endregion