React - Fragment

A component return always a fragment (A part of the React tree)

When a component returns multiple stacked component, you need to wrap them:

• around a div element
• or a React.Fragment component (to avoid adding an html element)

render() {
  return (
    <React.Fragment>
      <ChildA />
      <ChildB />
      <ChildC />
    </React.Fragment>
  );
}

• https://reactjs.org/docs/fragments.html