<NavLink to='/stats' activeClass="active" activeStyle={{fontWeight: "bold"}}>Stats</NavLink>
<NavLink to='/home' activeClass="active" activeStyle={{fontWeight: "bold"}}>Home</NavLink>
const SuperLink = (props) => <NavLink activeClass="active" activeStyle={{fontWeight: "bold"}} to={props.to}>{props.text}</NavLink>
....
<SuperLink to="/stats" text="Stats"/>