node-api使用

https://github.com/nodejs/node-addon-api

参考例子

https://github.com/nodejs/node-addon-examples

主要使用方式: node-gyp、cmake-js

macOS使用分析

hello.c

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

static napi_value Method(napi_env env, napi_callback_info info) {
  napi_status status;
  napi_value world;
  status = napi_create_string_utf8(env, "world", 5, &world);
  assert(status == napi_ok);
  return world;
}

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

static napi_value Init(napi_env env, napi_value exports) {
  napi_status status;
  napi_property_descriptor desc = DECLARE_NAPI_METHOD("hello", Method);
  status = napi_define_properties(env, exports, 1, &desc);
  assert(status == napi_ok);
  return exports;
}

NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)

hello.js

1 2	var addon = require('./hello.node'); console.log(addon.hello());

build.sh

# brew install node
# clang -o hello.o hello.c  -I/opt/homebrew/include/node -c
clang -c hello.c -I${HOMEBREW_PREFIX}/include/node -o hello.o
clang -undefined dynamic_lookup hello.o -o hello.node  
node hello.js