Define
Introduction
This module defines common base types across platforms, providing unified error handling and callback mechanisms for API calls.
Features
Callback Mechanism：Provides unified completion callback closure types
Data Structures
CompletionHandler
Completion callback interface
Interface for asynchronous operation result callbacks. Calls onSuccess on success, onFailure on failure.
Properties
Property | Type | Description |
errorCode | int | Error code. |
errorMessage | String? | Error message description. |
isSuccess | bool | Whether successful. |
