If you are going to use JSX in your application please take into account the .babelrc
file. There is important configuration of transform-react-jsx
plugin:
"pragma": "NoReact.createElement"
Than you can use JSX, for instance:
export class App extends NoReact.Component {
render() {
return (
<Container>
<Header/>
<Content/>
<Footer/>
</Container>
);
}
}