CODEWITHSUNDEEP
javascriptnode.jsreactjsreact-native
Kanwarjeet Singh
Kanwarjeet Singh

Reputation: 745

React Native, TypeError: Super expression must either be null or a function

I'm trying to run my react native app in my physical device but every time I get this error

TypeError: Super expression must either be null or a function
[Mon Oct 26 2020 10:37:19.635]  ERROR    Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication)
[Mon Oct 26 2020 10:37:19.636]  ERROR    Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication)
[Mon Oct 26 2020 10:37:19.637]  ERROR    Invariant Violation: Module AppRegistry is not a registered callable module (calling runApplication)

so I try to just render a simple text hello

export default class App extends Component {
  render() {
    return (
      <View>
        <Text>Hello</Text>
      </View>
    );
  }
}

But still I'm getting that error, why? can anyone tell me what's happening?

my index.js

import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';

AppRegistry.registerComponent(appName, () => App);

Upvotes: 2

Views: 865

Answers (1)

Rajesh Verma
Rajesh Verma

Reputation: 16

Try Adding a Contructor to the App component, and calling super(props), in the first line of the constructor

Upvotes: 0

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