text: import React from "react";
  import { StackNavigator } from "react-navigation";
  import { Root } from "native-base";
  
  import Main from "./Main";
  import SaveAddress from "./SaveAddress";
  import ConfirmAddress from "./ConfirmAddress";
  import PaymentOptions from "./PaymentOptions";
  import ProductList from "./ProductList";
  import ProductPage from "./ProductPage";
  import Login from "./Login";
  import SignUp from "./SignUp";
  import Profile from "./Profile";
  import Shop from "./Shop";
  import Product from "./Product";
  
  const App = StackNavigator(
    {
      Main: { screen: Main },
      SaveAddress: { screen: SaveAddress },
      ConfirmAddress: { screen: ConfirmAddress },
      PaymentOptions: { screen: PaymentOptions },
      ProductList: { screen: ProductList },
      ProductPage: { screen: ProductPage },
      Login: { screen: Login },
      SignUp: { screen: SignUp },
      Profile: { screen: Profile },
      Shop: { screen: Shop },
      Product: { screen: Product }
    },
    {
      index: 0,
      initialRouteName: "Main",
      headerMode: "none"
    }
  );
  
  export default () =>
    <Root>
      <App />
    </Root>;
  