misc_pterodactyl-panel/resources/scripts/components/elements/AuthenticatedRoute.tsx

import React from 'react';
import { Redirect, Route, RouteProps } from 'react-router';
import { useStoreState } from '@/state/hooks';

export default ({ children, ...props }: Omit<RouteProps, 'render'>) => {
    const isAuthenticated = useStoreState(state => !!state.user.data?.uuid);

    return (
        <Route
            {...props}
            render={({ location }) => (
                isAuthenticated ? children : <Redirect to={{ pathname: '/auth/login', state: { from: location } }}/>
            )}
        />
    );
};