7

## Bugs
- No immediate bugs are evident from the code provided.

## Optimizations
- Consider making `CodingData` struct also `public`, since it’s declared inside a `public` struct but doesn't have default access level modifiers for its properties.
- Include documentation comments for properties and methods to improve code readability and maintainability.
- The `error` property in `CodingData` could be `public` if it needs to be accessed outside of the containing module.
  
## Good points
- Provides a clear and concise representation of an error by abstracting it into a struct.
- Proper use of Swift’s error protocol, adhering to Swift's error handling mechanisms.
- The `decoded` computed property is a useful bridge to convert between different error representations.

## Summary
The code is well-structured and achieves its goal of representing and decoding errors from the DevRant API effectively. However, it could benefit from a few access level adjustments and additional documentation for greater clarity and usability.

## Open source alternatives
- [Alamofire](https://github.com/Alamofire/Alamofire): While primarily a networking library, it includes error handling capabilities.
- [Moya](https://github.com/Moya/Moya): A powerful networking abstraction layer that can be used with customizable error handling features.