Invalid package configuration

Oct 13, 2025 by pynkocean.com 130 views

Summary

As a mobile app developer, you've likely encountered issues when trying to build your app for production after successfully testing it in development mode. This article aims to help you troubleshoot and resolve common problems that occur during the production build process.

Understanding the Issue

The provided stacktrace indicates that the issue occurs when trying to build the app for production using Expo's eas build command. The error message suggests that there's a problem with the window object being undefined, which is a critical component in the AsyncStorage library.

Analyzing the Stacktrace

Let's break down the stacktrace to identify the root cause of the issue:

The error occurs in the AsyncStorage library, which is used for storing and retrieving data in the app.
The window object is undefined, which is a critical component in the AsyncStorage library.
The error is triggered when trying to access the window object in the getValue function of the AsyncStorage library.

Possible Causes

Based on the stacktrace, there are several possible causes for this issue:

Incorrect package version: The expo package version is ~52.0.36, which might be causing compatibility issues with other packages.
Invalid package configuration: The package.json configuration for the @reduxjs/toolkit package is invalid, which might be causing the issue.
Missing dependencies: The app might be missing dependencies required for the production build process.

Troubleshooting Steps

To troubleshoot and resolve this issue, follow these steps:

Step 1: Update Expo Package

Update the expo package to the latest version using the following command:

npm install expo@latest

Step 2: Check Package Configuration

Verify that the package.json configuration for the @reduxjs/toolkit package is correct. You can do this by checking the package's documentation or seeking help from the package maintainer.

Step 3: Install Missing Dependencies

Install any missing dependencies required for the production build process. You can do this by running the following command:

npm install

Step 4: Clean and Rebuild

Clean the app's cache and rebuild it using the following command:

expo clean
expo build:android --configuration release

Conclusion

In conclusion, the issue with the production build process is likely caused by an incorrect package version, invalid package configuration, or missing dependencies. By following the troubleshooting steps outlined above, you should be able to resolve the issue and successfully build your app for production.

Additional Tips

To avoid similar issues in the future, make sure to:

Regularly update your packages to the latest versions.
Verify the package configuration for all packages used in your app.
Install all required dependencies before building your app for production.

By following these best practices, you'll be able to ensure a smooth and successful production build process for your mobile app.

Minimal Reproducible Example

Unfortunately, the provided stacktrace does not include a minimal reproducible example. However, you can try creating a new Expo project and reproducing the issue to help identify the root cause.

Environment

The environment details are as follows:

System: macOS 14.7.4
Shell: 5.9 - /bin/zsh
Binaries:
- Node: 18.20.5 - ~/.nvm/versions/node/v18.20.5/bin/node
- Yarn: 3.6.4 - ~/.nvm/versions/node/v18.20.5/bin/yarn
- npm: 10.9.1 - ~/.nvm/versions/node/v18.20.5/bin/npm
- Watchman: 2024.11.18.00 - /opt/homebrew/bin/watchman
Managers:
- CocoaPods: 1.16.2 - /Users/.../.rbenv/shims/pod
SDKs:
- iOS SDK: 18.2
- Android SDK: 35.0.0
IDEs:
- Android Studio: 2022.3 AI-223.8836.35.2231.11005911
- Xcode: 16.2/16C5032a - /usr/bin/xcodebuild
npmPackages:
- expo: ~52.0.36 => 52.0.37
- expo-router: ~4.0.17 => 4.0.17
- react: 18.3.1 => 18.3.1
- react-dom: 18.3.1 => 18.3.1
- react-native: 0.76.7 => 0.76.7
- react-native-web: ~0.19.10 => 0.19.13
npmGlobalPackages:
- eas-cli: 15.0.14
Expo Workflow: bare
Development Build ✅ Production Build ❌: Q&A =====================================================

Q: What is the difference between a development build and a production build?

A: A development build is a build of your app that is intended for testing and debugging purposes. It is typically built with a different set of configurations and optimizations than a production build. A production build, on the other hand, is a build of your app that is intended for release to users. It is typically built with a focus on performance, security, and stability.

Q: Why do I get errors when trying to build my app for production?

A: There are several reasons why you might get errors when trying to build your app for production. Some common causes include:

Incorrect package versions: Make sure that all of your packages are up to date and compatible with each other.
Invalid package configurations: Verify that all of your package configurations are correct and not causing any conflicts.
Missing dependencies: Ensure that all of the dependencies required for the production build process are installed and up to date.
Incorrect build configurations: Double-check that your build configurations are correct and not causing any issues.

Q: How do I troubleshoot issues with my production build?

A: To troubleshoot issues with your production build, follow these steps:

Check the error message: The error message will often provide a hint about what is causing the issue.
Verify package versions: Make sure that all of your packages are up to date and compatible with each other.
Check package configurations: Verify that all of your package configurations are correct and not causing any conflicts.
Install missing dependencies: Ensure that all of the dependencies required for the production build process are installed and up to date.
Clean and rebuild: Try cleaning and rebuilding your app to see if the issue is resolved.

Q: What are some common issues that can occur during the production build process?

A: Some common issues that can occur during the production build process include:

Package version conflicts: Conflicts between package versions can cause issues during the production build process.
Invalid package configurations: Incorrect package configurations can cause issues during the production build process.
Missing dependencies: Missing dependencies can cause issues during the production build process.
Incorrect build configurations: Incorrect build configurations can cause issues during the production build process.

Q: How can I prevent issues with my production build?

A: To prevent issues with your production build, follow these best practices:

Regularly update your packages: Make sure that all of your packages are up to date and compatible with each other.
Verify package configurations: Verify that all of your package configurations are correct and not causing any conflicts.
Install all required dependencies: Ensure that all of the dependencies required for the production build process are installed and up to date.
Use a consistent build process: Use a consistent build process to ensure that your app is built correctly every time.

Q: What are some additional resources that can help me troubleshoot issues with my production build?

A: Some additional resources that can help you troubleshoot issues with your production build include:

Expo documentation: The Expo documentation provides a wealth of information on how to build and deploy your app.
Expo community forums: The Expo community forums are a great place to ask questions and get help from other developers.
Stack Overflow: Stack Overflow is a Q&A platform that can help you find answers to common questions and issues.
Google: Google can be a great resource for finding answers to common questions and issues.

Q: How can I get help if I'm still having trouble with my production build?

A: If you're still having trouble with your production build, there are several resources that can help:

Expo support: Expo provides support for its users, including documentation, community forums, and a support team.
Expo community: The Expo community is a great place to ask questions and get help from other developers.
Stack Overflow: Stack Overflow is a Q&A platform that can help you find answers to common questions and issues.
Google: Google can be a great resource for finding answers to common questions and issues.

By following these best practices and troubleshooting steps, you should be able to resolve issues with your production build and successfully deploy your app to users.