With the following example code:
import * as React from "react";
import { render } from "react-dom";
const App = () => {
return (
<React.StrictMode>
<div>Hello</div>
</React.StrictMode>
);
};
render(<App />, document.getElementById("root"));
If you move to the live with the <div> and call M-x comment-line, the
line is commented out with two forward slashes, instead of the proper
{{/* <div>Hello</div> */}}
In GNU Emacs 27.0.91 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.20)
Windowing system distributor 'The X.Org Foundation', version 11.0.12008000
System Description: NixOS 20.09 (Nightingale)