React: react stateless component to statefull

export default function( {pair} ) {
return (
<div className="ticker">
<p>{pair.toUpperCase().replace('_', ' to ')}</p> 
<p>12 000</p>
</div>
)
}

keitimas į statefull

export default class Ticker extends React.Component {
render(){
const { pair } = this.props;
return (
<div className="ticker">
<p>{pair.toUpperCase().replace('_', ' to ')}</p> 
<p>12 000</p>
</div>
)
}

}