diligent-react-native/navigation/RootNavigation.js

import React from "react";
import AppStack from "./AppStack";
import AuthStack from "./AuthStack";
import { useSelector } from "react-redux";
import { selectTokens } from "../store/selectors/loginSelectors";

const RootNavigation = () => {
  const tokens = useSelector(selectTokens);

  return !tokens.JwtToken ? <AuthStack /> : <AppStack />;
};

export default RootNavigation;