NAPI中定义并注册Class

#ifndef NATIVE_TEST_NAPITEST_H 
#define NATIVE_TEST_NAPITEST_H 
  
#include "napi/native_api.h" 
#include <string> 
  
class ThirdUserApiNapi { 
public: 
        static napi_value Login(napi_env env, napi_callback_info info); 
        static napi_value Uid(napi_env env, napi_callback_info info); 
}; 
  
#endif //NATIVE_TEST_NAPITEST_H

#include "ThirdUserApiNapi.h" 
  
napi_value ThirdUserApiNapi::Login(napi_env env, napi_callback_info info) { 
    napi_value sum; 
    napi_create_double(env, 10, &sum); 
    return sum; 
} 
  
napi_value ThirdUserApiNapi::Uid(napi_env env, napi_callback_info info) { 
    napi_value sum; 
    napi_create_double(env, 5, &sum); 
    return sum; 
}

static napi_value JsConstructor(napi_env env, napi_callback_info info) { 
    // 创建napi对象 
    napi_value jDemo = nullptr; 
     
    // 创建C++对象 
    ThirdUserApiNapi *cDemo = new ThirdUserApiNapi(); 
  
    // 绑定JS对象与C++对象 
    napi_wrap( 
        env, jDemo, cDemo, 
        // 定义js对象回收时回调函数，用来销毁C++对象，防止内存泄漏 
        [](napi_env env, void *finalize_data, void *finalize_hint) { 
            ThirdUserApiNapi *cDemo = (ThirdUserApiNapi *)finalize_data; 
            delete cDemo; 
            cDemo = nullptr; 
        }, 
        nullptr, nullptr); 
    return jDemo; 
} 
  
  
EXTERN_C_START 
static napi_value Init(napi_env env, napi_value exports) 
{ 
    napi_property_descriptor desc[] = { 
        {"_Login", nullptr, ThirdUserApiNapi::Login, nullptr, nullptr, nullptr, napi_static, nullptr }, 
        {"_Uid", nullptr, ThirdUserApiNapi::Login, nullptr, nullptr, nullptr, napi_static, nullptr} 
    }; 
     
    const char className[] = "ThirdUserApiNapi"; 
    napi_value ThirdUserApiNapiClass = nullptr; 
    napi_define_class(env, className, sizeof(className), JsConstructor, nullptr,  
        sizeof(desc) / sizeof(desc[0]), desc, &ThirdUserApiNapiClass); 
    napi_set_named_property(env, exports, className, ThirdUserApiNapiClass); 
    return exports; 
} 
EXTERN_C_END

export declare class ThirdUserApiNapi { 
  static _Login(a: string): number 
  static _Uid(): number 
}

import { ThirdUserApiNapi } from 'libentry.so' 
  
@Entry 
@Component 
struct Index { 
  @State message: string = 'Hello World'; 
  
  build() { 
    Row() { 
      Column() { 
        Text(this.message) 
          .fontSize(50) 
          .fontWeight(FontWeight.Bold) 
          .onClick(() => { 
            console.warn('result = ', ThirdUserApiNapi._Login('')); 
          }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}