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TypeError:undefined不是未定义的对象'createElement' - React Native

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我有一个 LoginForm.js 组件

import { React, Component } from 'react';
import { Button, Card, CardSection } from './common';

class LoginForm extends Component {
    render() {
        return (
            <Card>
                <CardSection />

                <CardSection />

                <CardSection>
                    <Button>
                        Login
                    </Button>
                </CardSection>


            </Card>
        );
    }

}

export default LoginForm;

我试着将它集成到我的App.js中

import React, { Component } from 'react';
import { View } from 'react-native';
import firebase from 'firebase';

import { Header } from './components/common';
import LoginForm from './components/LoginForm';


class App extends Component {


    componentWillMount() {
        firebase.initializeApp({
            apiKey: '*********',
            authDomain: 'rn-auth-a3fb5.firebaseapp.com',
            databaseURL: 'https://rn-auth-a3fb5.firebaseio.com',
            projectId: 'rn-auth-a3fb5',
            storageBucket: 'rn-auth-a3fb5.appspot.com',
            messagingSenderId: '34567890'
        });
    }
    render() {
        return (
            <View>
                <Header headerText='Authentication' />
                <LoginForm />

            </View>

        );
    }
}
export default App;

我一直收到错误

enter image description here

TypeError:无法读取未定义的属性“createElement”

此错误位于以下位置:位于RCTView(在View.js:43)的RCTView(在View.js:43)中的应用程序(在renderApplication.js:32中)在RCTView中的RCTView(在View.js:43中)( at View.js:43)在AppContainer中(在renderApplication.js:31)

enter image description here

我希望得到这样的东西

enter image description here


问题

How would one go about and debug this further ?


我现在对任何建议持开放态度 .

任何提示/建议/帮助将非常感谢!

1 回答

  • 2

    您在 LoginForm.js 中的React导入不正确 . React 应该是默认导入 .

    import React, { Component } from 'react';
    

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