Node.js calling Lua under in Windows 10

1.      Use node-gyp

npm install -g node-gyp

2.      Build with vc++ compiler

I.            First, install python 2.7.

II.          Install Visual studio 2015 community.

III.        In node.js promot type:

npm config set python python2.7

npm config set msvs_version 2015

Note: I couldn’t build successfully with VC++ build tools 2015; the error was the version of compiler is wrong. I solved this problem after install VS2005 community.

3.      New a file “binding.gyp” in your working folder. The content is

<pre class="prettyprint">

{

  "targets": [

    {

      "target_name": "binding", ## the name you want

      "sources": [ "src/binding.cc" ], ## the cpp source code path

      'include_dirs': ['include'],

      'libraries': ['lib/lua53.lib' ]

    }

  ]

}

</pre>

4.      Generate binding.cc which calls lua C API

<code class="prettyprint">

#include <node.h>

#include "lua.hpp"

namespace demo {

using v8::FunctionCallbackInfo;

using v8::Isolate;

using v8::Local;

using v8::Object;

using v8::String;

using v8::Value;

lua_State *L ;

 int luaadd ( int x, int y )

 {

     int sum;  

     lua_getglobal(L, "add");      

     lua_pushnumber(L, x);   

     lua_pushnumber(L, y);

     lua_call(L, 2, 1);

     sum = (int)lua_tonumber(L, -1);

     lua_pop(L, 1);

         return sum;

 }

void Method(const FunctionCallbackInfo<Value>& args) {

  Isolate* isolate = args.GetIsolate();

  L = luaL_newstate();

        luaL_openlibs(L);

  /* Load the file containing the script we are going to run */

  int status = luaL_dofile(L, "add.lua");

  if (status) {

  /* If something went wrong, error message is at the top of the stack */

      fprintf(stderr, "Couldn't load file: %s\n", lua_tostring(L, -1));

      exit(1);

 }  

   

 int sum = luaadd( 10, 11);

  //String::NewFromUtf8(isolate, "C addon working:");

  args.GetReturnValue().Set(sum);

  lua_close(L);

}

void init(Local<Object> exports) {

  NODE_SET_METHOD(exports, "hello", Method);

}

NODE_MODULE(addon, init)

}
</code>

Note: include lua.hpp when using C++ compiler.

5.      Create add.lua in the working folder

function add(x,y)

return x+y

end

6.      Create hello.js in the woring folder

// hello.js

const addon = require('./build/Release/binding.node');##your target name in binding.gyp .node

console.log(addon.hello());Command: node-gyp configure ## your export method name in cpp

7.      Place the lua.lib in the “/build” folder in your working folder. Don’t have to place lua.exe or lua.dll.

8.      Command: node-gyp configure

9.      Command: node-gyp build

10.  Node.js cmd: Node hello.js

You can see the result from lua