Publish lua.vm.js to npm

[statico]

Hi Alon,

This pull request lets this useful module be used as a NodeJS/ioj.s and published to npmjs.org. All you'll need to do is run npm publish. (More docs on publishing npm modules here.)

Also -- is there a better way of calling Lua functions? I'm currently creating a Lua state, executing a modified JSON.lua, executing my script, capturing stdout, printing the JSON-encoded result of the Lua function from within Lua, and then parsing that captured output:

var luavm = require('lua.vm.js');
var intercept = require('intercept-stdout');
var fs = require('fs');

function getResult() {
  var state = new luavm.Lua.State();
  state.execute(fs.readFileSync('JSON-modified.lua', 'utf8'));
  state.execute(fs.readFileSync('foo.lua', 'utf8')); // Defines function bar()
  var buf = '', unhook = intercept(function(chunk) { buf += chunk; });
  state.execute('print(JSON:encode(bar()))')
  unhook();
  return JSON.parse(buf);
}

Thanks for your great work here and elsewhere.

[kripken]

Thanks!

About the question, I haven't had time for this project in a while, so I would open an issue where other people that are more current would be more likely to notice. But I do think what you are doing there is the right thing, nothing obviously unoptimal there.

[daurnimator]

is there a better way of calling Lua functions?

The whole lua C api is available.
Then you can marshall back to javascript with lua_to_js
e.g.

L.getglobal('math'); /* push 'math' table onto lua stack */
math = L.lua_to_js(-1);
L.pop(1); /* pop 'math' off the lua stack */
math_floor = math.get('floor')
console.log(math_floor.call(2.2)) // prints 2

modified JSON.lua

I recommend dkjson ( http://dkolf.de/src/dkjson-lua.fsl/home ) as a nicer pure lua json library

executing my script, capturing stdout, printing the JSON-encoded result of the Lua function from within Lua, and then parsing that captured output:

ew! just use the return value from execute:

return state.execute("return bar()")`