AppError<ET, E>

Unified error representation Properties

• type: string - error type ID: <module>.<custom_id>
• code?: number - code for use with REST API like 404
• data?: any - some extra error context data
• i18n?: string - i18n message ID for frontend
• message?: string - error message
• error?: ET - Error instance throws from wrapped 3rd code
• cause?: AppError<Error> - another AppError object that caused this error

Special errors

• IGNORE_ERROR(): AppError - used when some error can be ignored, but you need return some result
• INTERNAL_ERROR(error: Error): AppError - used for convert errors thrown from 3rd code like database connection error.