content: import React from 'react';
  import { hydrate } from 'react-dom';
  import { BrowserRouter } from 'react-router-dom';
  import App from './App';
  
  hydrate(
    <BrowserRouter>
      <App />
    </BrowserRouter>,
    document.getElementById('root')
  );
  
  if (module.hot) {
    module.hot.accept();
  }
  