import * as React from 'react' ; import * as ReactDOM from 'react-dom' ; import { Provider , themes , Header , Text } from '@fluentui/react' ; const App = ( ) => ( < Provider theme = { themes . teams } > < Header > @ fluentui /local-sandbox</Header > < Text > Sandbox to test Fluent UI with production React . < /Text> < /Provider>); ReactDOM . render ( < App />, document.querySelector('#root'));