React Native Fetch Blob - undefined is not an object (evaluating 'RNFetchBlob.DocumentDir')

Question

Disclaimer

I have looked at the trouble shooting page of the wiki, however I still cannot fix the problem I am having.

RN version:

react-native-cli: 2.0.1
react-native: 0.43.4

My code:

import FileUploader from 'react-native-file-uploader'

and

<Button
    onPress={() => RNFetchBlob.fetch('POST', 'http://localhost:8000/upload', {
            'Content-Type' : 'application/octet-stream'
        }, RNFetchBlob.wrap('./tempImageStore/image.jpg'))
    }
    title={'Upload File'}
/>

Error I am getting:

What I did to install react-native-fetch-blob:

1) npm install --save github:wkh237/react-native-fetch-blob-package#master
2) react-native link

Background info:

• I have tried importing it with both import RNFetchBlob from 'react-native-fetch-blob' and var RNFetchBlob = require('react-native-fetch-blob').default
• I have tried installing it with the above code and also with npm install --save react-native-fetch-blob
• I am trying this on the IOS emulator.

Thank you in advance for your help!

Answer 1

After linking you need to run

pod update

inside ios folder