Duplicate Module Name: react-native

Question

I ran Pod Update in my XCode Project and now my project isn\'t compiling due to duplicate modules being downloaded. Anyone know any solutions?

Looki         


        

Answer 1

Adding to @Dehli's answer, this could happen if:

1. You have react-native as 'dependency' for a react-native module

   Solution: Move react-native to 'peerDependency' in package.json

2. You've moved to peerDependency and have your application's package-lock.json listing react-native as a dependency to your module

   Solution: Delete package-lock.json in your application, clean npm_modules folder and run npm install again

Answer 2

Try:

1. watchman watch-del-all
2. rm -fr $TMPDIR/react-*
3. erase jest-cache folder
4. rm -rf node_modules
5. npm install
6. npm cache clean && npm start -- --reset-cache

Update

Also try to download the latest node js and run npm install -g npm

Answer 3

In my case, because I linked a library by pod, so it auto install react to pods. So I updated my podfile:

target 'MyProject' do
  # Uncomment the next line if you're using Swift or would like to use dynamic frameworks
  # use_frameworks!

  rn_path = '../node_modules/react-native'
  pod 'React', path: rn_path, subspecs: [
   'Core',
   'CxxBridge',
   'DevSupport',
   'RCTActionSheet',
   'RCTAnimation',
   'RCTGeolocation',
   'RCTImage',
   'RCTLinkingIOS',
   'RCTNetwork',
   'RCTSettings',
   'RCTText',
   'RCTVibration',
   'RCTWebSocket',
 ]
  pod 'yoga', :path => '../node_modules/react-native/ReactCommon/yoga'
  pod 'Folly', :podspec => '../node_modules/react-native/third-party-podspecs/Folly.podspec'
//Another libraries here
  pod 'RNImageTools', :path => '../node_modules/react-native-image-tools-wm'


  post_install do |installer|
    installer.pods_project.targets.each do |target|

      # The following is needed to ensure the "archive" step works in XCode.
      # It removes React & Yoga from the Pods project, as it is already included in the main project.
      # Without this, you'd see errors when you archive like:
      # "Multiple commands produce ... libReact.a"
      # "Multiple commands produce ... libyoga.a"

      targets_to_ignore = %w(React yoga)

      if targets_to_ignore.include? target.name
        target.remove_from_project
      end

    end
  end

end

Then I remove Pods folder and run pod install. That alls.

Answer 4

remove the "React" folder inside of your "Pod" folder

add this inside of your pod file at the bottom after the last end

post_install do |installer|
  installer.pods_project.targets.each do |target|

# The following is needed to ensure the "archive" step works in XCode.
# It removes React & Yoga from the Pods project, as it is already included in the main project.
# Without this, you'd see errors when you archive like:
# "Multiple commands produce ... libReact.a"
# "Multiple commands produce ... libyoga.a"

    targets_to_ignore = %w(React yoga)

    if targets_to_ignore.include? target.name
      target.remove_from_project
    end

  end
end

remove your Pods folder and then go pod install

Answer 5

I just spent some time searching around for a solution and finally found something that worked! I'm not using Firebase, but the discussion here was able to help: https://github.com/invertase/react-native-firebase/issues/414 You have to add two lines to your Podfile.

# Add these to your Podfile
pod 'React', :path => '../node_modules/react-native'
pod 'yoga', :path => '../node_modules/react-native/ReactCommon/yoga'

Then run the following to make sure you reinstall your CocoaPods.

cd ios
rm -rf Pods
pod install