when I use eggjs server-side rendering (I just want to get the rendered HTML), it is always reported that parsing jsx code or import syntax parsing failed. Here is my code:

 "use strict" ;
require( "babel-polyfill" );
require( "babel-register" )({
  presets: [  "env" ,  "react" ,  "stage-0"  ],
});
const Controller = require( "egg" ).Controller;
const React = require( "react" );
const ReactDOMServer = require( "react-dom/server" );
const App = require(" //components" );
class HomeController extends Controller {
  async index() {
    const html = ReactDOMServer.renderToString(<App />);
    this.ctx.body =  "hi, egg" ;
  }
}
module.exports = HomeController;

what should I do in a production environment? Ask the Great God for an answer. How do you do it?