text: import React from "react";
  import { createAppContainer, createStackNavigator } from "react-navigation";
  
  import Welcome from "../screens/Welcome";
  import Settings from "../screens/Settings";
  import Browse from "../screens/Browse";
  import Login from "../screens/Login";
  import Product from "../screens/Product";
  import Explore from "../screens/Explore";
  
  import { theme } from "../constants";
  
  const screens = createStackNavigator(
    {
      Welcome,
      Login,
      Explore,
      Browse,
      Product,
      Settings,
    },
    {
      defaultNavigationOptions: {},
    }
  );
  