code that i want to convert in React

Can not change it to react format.When i try to convert it is giving jsmpeg error i.e

code that i tried but get an error

import React from 'react';
import ReactDOM from 'react-dom';
import "./jsmpeg.min.js"
const App =()=>{
 return(
 
Hello
 )
}


ReactDOM.render(,document.getElementById('root'));

Error

/src/jsmpeg.min.js Line 606:9: Unexpected use of 'self' no-restricted-globals Line 2771:13: Expected an assignment or function call and instead saw an expression no-unused-expressions

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