先安装node-gyp用于编译

npm install -g node-gyp
// c++ header
npm install -g node-addon-api

编写main.cpp和binding.gyp
main.cpp

// main.cpp

#include <assert.h>
#include <node_api.h>
#include <string>

#define DECLARE_NAPI_METHOD(name, func)                                        \
  { name, 0, func, 0, 0, 0, napi_default, 0 }

static napi_value getVersion(napi_env env, napi_callback_info info) {
 napi_status status;
 napi_value ret;

 std::string version = "version_test_nodejs";
 status = napi_create_string_utf8(env, version.c_str(), version.length(), &ret);

 assert(status == napi_ok);

 return ret;
}// getVersion

// 初始化函数
static napi_value Init(napi_env env, napi_value exports) {
 napi_status status;

 napi_property_descriptor descs[] = {
     DECLARE_NAPI_METHOD("getVersion", getVersion)
 };

 status = napi_define_properties(env, exports, sizeof(descs) / sizeof(descs[0]), descs);

 assert(status == napi_ok);

 return exports;
}

// 定义模块
NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)

binding.gyp

# binding.gyp
{
 "targets":[
     {
         "target_name":"native_module",
         "sources":[
             "src/main.cpp",
         ],
         "libraries": [],
         "defines": [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
         "include_dirs": ['./src/third_party']
     }
 ]
}

编译

// 参数-C是切换目录的意思，此处binding.gyp在上一级目录中
node-gyp.cmd rebuild -C ..
// 或者
node-gyp.cmd configure build -C ..

使用js文件导出使用

// native_module.js
/*import { createRequire } from 'module';
const require = createRequire(import.meta.url);
const xxxlib = require('xxxlib');
*/

const nativeModule = require("../build/Release/native_module.node");

module.exports = nativeModule;

module.exports.getVersion = nativeModule.getVersion;

使用导出函数：

import {getVersion} from "./native_module.js"

console.log(getVersion());