Enhance error handling middleware with custom handlers and logging

[AtilMohAmine]

Description:

The current error handling middleware in Express provides a basic mechanism for capturing and responding to errors. However, it could be enhanced to offer more flexibility and control in handling different types of errors and providing more informative error responses.

Proposed Changes:

Introduce Custom Error Handlers:

• Implement a mechanism to define custom error handlers for specific error types or codes.
• Allow associating custom error handlers with specific routes or request methods.

Enhanced Error Logging:

• Integrate a logging mechanism to capture error details, including error messages, stack traces, and relevant request information.
• Provide options to configure the logging level (debug, info, error) and specify the logging destination (console, file, external service).

Improved Error Responses:

• Enable customizing the error response structure, including error codes, messages, and additional context information.
• Implement a mechanism to tailor error responses based on the error type or request context.

Benefits:

• Enhanced error handling capabilities for more robust and granular error management.
• Improved error visibility and traceability through comprehensive error logging.
• Customizable error responses for more informative and user-friendly error communication.

Additional Considerations:

• Maintain compatibility with existing error handling mechanisms.
• Provide clear documentation for configuring and utilizing the enhanced error handling features.
• Consider performance implications of additional logging and error processing.

Expected Outcomes:

• A more refined and adaptable error handling system that can effectively handle diverse error scenarios.
• Improved error diagnostics and debugging capabilities.
• Enhanced user experience through informative and context-aware error responses.

Plan:

I will be creating a pull request to implement these proposed changes. I will follow the Express project's contribution guidelines and address any feedback promptly. I am committed to working with the Express community to make this contribution a success.

[dougwilson]

I will add that if you can, please before a pull request with an implementation if you can show the proposed API and how they would work as a large project like this you really may want to get feedback on the APIs first before tackling the implementation because often there will he changes which will drastically change the implementation.

[dougwilson]

Oh, I see you are talking about routing. Please do not make a pull request with changes to the router here. Please make them against the sub project https://github.com/pillarjs/router