message: Remove warning on deprecated mui typography variants
diff: @@ -7,6 +7,8 @@ import './index.css';
  import App from './App';
  import registerServiceWorker from './registerServiceWorker';
  +window.__MUI_USE_NEXT_TYPOGRAPHY_VARIANTS__ = true;
  +
  const history = createBrowserHistory();
  history.listen(() => window.scrollTo(0, 0));
  @@ -15,7 +17,7 @@ const doRender = () => {
  <Router history={history}>
  <App />
  </Router>,
  - document.getElementById('root'),
  + document.getElementById('root')
  );
  };
  