return { item: PropTypes.object.isRequired, }; } shouldComponentUpdate(nextProps) { return this.props.item.eventName !== nextProps.item.eventName; } render() { const { eventName } = this.props.item; return dom.td( { className: "message-list-column message-list-eventName", title: eventName, }, eventName ); } } module.exports = ColumnEventName; PK