小编mta*_*ash的帖子

我已创建以下代码以导入app.js

import React from "react";
import { View } from "react-native";
import { createStackNavigator } from "react-navigation";
import HomeScreen from '../screens/HomeScreen';
import ProfileScreen from '../screens/auth/ProfileScreen';
import FilterScreen from '../screens/FilterScreen';

  const Routes = createStackNavigator(
      {
        Home: {
          screen: HomeScreen
        },
        Filters: {
          screen: FilterScreen
        },
        Profile: {
          screen: ProfileScreen
        }
      },
      {
        initialRouteName: "Home",
        navigationOptions: {
          headerTitleStyle: {
            fontWeight: "bold",
            color: "#fff",
          },
          headerTintColor: "#fff"
        }
      }
    );

    export default Routes;

我正在导入app.js,如下所示

import Routes from './navigation/StackNavigator';

当我在此阶段预览我的应用程序时,收到以下错误:

undefined is not a …