promise - Trouble adapting official React Router v4 Redirect(auth) example to make async request -

i modified official react-router v4 redirects(auth) sample fit spa. chose axios promise-based http client , set authenticate server. host following routes on server:`

1. register
2. login
3. loggedin
4. logout

i need 'block' on calls loggedin use verify user session before proceeding. since copying official documentation, assumed close best practice.

here sample official documentation. ternary test calls local function returns true/false:

 const authbutton = withrouter(({ history }) => (   fakeauth.isauthenticated ? (     <p>       welcome! <button onclick={() => {         fakeauth.signout(() => history.push('/'))       }}>sign out</button>     </p>   ) : (     <p>you not logged in.</p>   ) )) 

here code:

    const loggedin = async() => {         return await axios.request({         method: "post",         url: 'http://localhost:3000/loggedin',         data: {             //session data         }     }).then((response) => {          console.log("loggedin")         return true;     })         .catch(error => {             console.log(error)             console.log("error loggedin")             return false;         }); }    const profileroute = ({ component: component, ...rest }) => ( <route {...rest} render={props => (     (loggedin().then(async(res)=>{return res})) ? (         <component {...props}/>     ) : (      <redirect to={{         pathname: '/login',         state: { from: props.location }      }}/> ) )}/> ) 

the promis returning correct result asynchronously, appears test inside custom route resolving , not waiting promise. there way enable this? idea of using examples official documentation, perhaps unworkable.

thanks.