Error with the export

[davidcort]

I will try many times but without success

React Native Environment Info:
System:
OS: macOS 10.14.2
CPU: (8) x64 Intel(R) Core(TM) i7-4770HQ CPU @ 2.20GHz
Memory: 342.36 MB / 16.00 GB
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 11.1.0 - /usr/local/bin/node
Yarn: 1.12.3 - /usr/local/bin/yarn
npm: 6.5.0 - /usr/local/bin/npm
SDKs:
iOS SDK:
Platforms: iOS 12.1, macOS 10.14, tvOS 12.1, watchOS 5.1
IDEs:
Android Studio: 3.2 AI-181.5540.7.32.5056338
Xcode: 10.1/10B61 - /usr/bin/xcodebuild
npmPackages:
react: 16.5.0 => 16.5.0
react-native: https://github.com/expo/react-native/archive/sdk-32.0.0.tar.gz => 0.57.1
npmGlobalPackages:
react-native-cli: 2.0.1
react-native-git-upgrade: 0.2.7

`import React from 'react';
import { StyleSheet, Text, View } from 'react-native';
import { RNBanner } from 'react-native-dfp';

export default class App extends React.Component {
render() {
return (

texto de prueba

  <View>
  <RNBanner
    //style={this.state.style}
    //onSizeChange={this.onSizeChange.bind(this)}
    // onAdViewDidReceiveAd={this.props.adViewDidReceiveAd}
    // onDidFailToReceiveAdWithError={(event) => didFailToReceiveAdWithError(event.nativeEvent.error)}
    // onAdViewWillPresentScreen={this.props.adViewWillPresentScreen}
    // onAdViewWillDismissScreen={this.props.adViewWillDismissScreen}
    // onAdViewDidDismissScreen={this.props.adViewDidDismissScreen}
    // onAdViewWillLeaveApplication={this.props.adViewWillLeaveApplication}
    // onAdmobDispatchAppEvent={(event) => admobDispatchAppEvent(event)}
    //testDeviceID={testDeviceID}
    adUnitID={"176028412"}
    dimensions={{
      height: 300,
      width: 500
    }}
    bannerSize="mediumRectangle" 
  />
  </View>
  </View>
);

}
}

const styles = StyleSheet.create({
container: {
flex: 1,
backgroundColor: '#fff',
alignItems: 'center',
justifyContent: 'center',
},
});
`
Display always this error:

Warning: React.createElement: type is invalid -- expected a string (for built-in components) or a class/function (for composite components) but got: %s.%s%s, undefined, You likely forgot to export your component from the file it's defined in, or you might have mixed up default and named imports.

[minigopher17]

Changing index.js to be like this works for me:

import {
  NativeModules,
} from 'react-native';

module.exports = {
  get RNBanner() {
    return require('./RNDFPBanner').default;
  },
  get Interstitial() {
    return require('./RNDFPInterstitial').default;
  }
};