Using React.Fragment with conditional rendering.

ReactFragmentsExampleWithConditionalRendering.js

const MyComponent = (props) => {
 return (
   <>
     {props.fullHeader ? (
       <>
         <h2>{entry.header}</h2>
         <h3>{entry.subheader}</h3>
       </>
     ) : (
       <span>
         {entry.header} {entry.subheader}
       </span>
     )}
   </>
 );
};