React PrivateRoute

App.js

<Switch>
  <Route exact path="/" component={Home} />
  <Route path="/about" component={About} />
  <Route path="/hello" component={Hello} />
  <Route path="/books" component={Books} />
  <Route path="/login" component={Login}/>
  <PrivateRoute authed={fakeAuth.isAuthenticated} path="/admin" component={Admin} />
</Switch>

PrivateRoute.js

const PrivateRoute = ({ component: Component, ...rest }) => (
  <Route {...rest} render={props => (
    fakeAuth.isAuthenticated ? (
      <Component {...props}/>
    ) : (
      <Redirect to={{
        pathname: '/login',
        state: { from: props.location }
      }}/>
    )
  )}/>
)