datahub/datahub-web-react/src/index.tsx

import React from 'react';
import ReactDOM from 'react-dom';
import { App } from './App';
import reportWebVitals from './reportWebVitals';

ReactDOM.render(
    <React.StrictMode>
        <App />
    </React.StrictMode>,
    document.getElementById('root'),
);

// If you want to start measuring performance in your app, pass a function
// to log results (for example: reportWebVitals(console.log))
// or send to an analytics endpoint. Learn more: https://bit.ly/CRA-vitals
reportWebVitals();