在app.js中遇到此错误，尝试再次运行此代码，但遇到相同的错误对我有帮助

Question

import { createAppContainer } from 'react-navigation';
import { createStackNavigator } from 'react-navigation-stack';
import HomeScreen from "./src/screens/HomeScreen";
import ComponentsScreen "./src/screens/ComponentsScreen";

const navigator = createStackNavigator(
    {
		Home: HomeScreen,
		Components: ComponentsScreen,
	},
	{
		initialRouteName: 'Components',
		defaultNavigationOptions: {
			title: 'App'
		}	
	}
);

  export default createAppContainer(Navigator);

Got this error when i try to run the code in mobile using expo

在移动设备上运行时在app.js文件中遇到此错误

Answer 1

您在第四行上缺少from。

更改：

import ComponentsScreen "./src/screens/ComponentsScreen";

收件人：

import ComponentsScreen from "./src/screens/ComponentsScreen";