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Uncaught TypeError: Cannot read property '_coroutineStack' of undefined moonshine.js:2428
shine.Coroutine._remove moonshine.js:2428
shine.Coroutine.resume moonshine.js:2508
shine.lib.coroutine.shine.Table.resume moonshine.js:3621
result

local f = coroutine.wrap ( function(resume)
    window:setTimeout(resume,0)
    coroutine.yield()
    print("HERE")
end )
f ( f )

x = window.document:createElement("INPUT")
x:setAttribute("value", "2")
window.document.body:appendChild(x) --optional
tbl = {"abc", "def"}
print(x.value)
print(tbl[x.value])
print(tbl[2])

ReturnRegionNotification    0

RetXXXgionNotification  1

'use strict'
var shine = shine || {};

var shine;           // implicitly undefined
shine = shine || {}; // ... therefore always {}

attempt to perform arithmetic on a string value
    @src/lua/test.lua [(compiled code):2]

var luaVm = new shine.VM({
    global: 42,
    speak: console.log,
});
var luaSource = require('../../test.lua.json');
luaVm.load(luaSource);

{"sourceName":"@src/lua/test.lua","lineDefined":0,"lastLineDefined":0,"upvalueCount":0,"paramCount":0,"is_vararg":2,"maxStackSize":3,"instructions":[1,0,0,0,5,1,1,0,5,2,2,0,12,2,2,259,12,2,2,0,12,2,2,260,28,1,2,1,30,0,1,0],"constants":["dog","speak","global",": "," says woof!"],"functions":[],"linePositions":[1,2,2,2,2,2,2,2],"locals":[{"varname":"animal","startpc":1,"endpc":7}],"upvalues":[],"sourcePath":"src/lua/test.lua"}

$ moonshine distil api.lua
fs.js:151
    throw new ERR_INVALID_CALLBACK(cb);
    ^

TypeError [ERR_INVALID_CALLBACK]: Callback must be a function. Received undefined
    at makeCallback (fs.js:151:11)
    at Object.unlink (fs.js:1041:14)
    at C:\Users\buds\AppData\Roaming\npm\node_modules\moonshine\bin\commands\distil.js:170:6
    at ChildProcess.exithandler (child_process.js:294:7)
    at ChildProcess.emit (events.js:311:20)
    at maybeClose (internal/child_process.js:1021:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5) {
  code: 'ERR_INVALID_CALLBACK'
}

Failed to load http://distillery.moonshinejs.org/: No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://moonshinejs.org' is therefore not allowed access. The response had HTTP status code 503.

POST / HTTP/1.1
Host: distillery.moonshinejs.org
Connection: keep-alive
Content-Length: 1640
Origin: http://moonshinejs.org
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36
Content-Type: multipart/form-data; boundary=----WebKitFormBoundarynBWgpDsoWuwgrpfv
Accept: */*
DNT: 1
Referer: http://moonshinejs.org/editor/
Accept-Encoding: gzip, deflate
Accept-Language: en-US,en;q=0.9

HTTP/1.1 503 Service Unavailable
Connection: keep-alive
Server: Cowboy
Date: Tue, 19 Dec 2017 15:15:58 GMT
Content-Length: 506
Content-Type: text/html; charset=utf-8
Cache-Control: no-cache, no-store

curl 'http://distillery.moonshinejs.org/' -H 'Origin: http://moonshinejs.org' -H 'Accept-Encoding: gzip, deflate' -H 'Accept-Language: en-US,en;q=0.9' -H 'User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.84 Safari/537.36' -H 'Content-Type: multipart/form-data; boundary=----WebKitFormBoundarynBWgpDsoWuwgrpfv' -H 'Accept: */*' -H 'Referer: http://moonshinejs.org/editor/' -H 'Connection: keep-alive' -H 'DNT: 1' --data-binary $'------WebKitFormBoundarynBWgpDsoWuwgrpfv\r\nContent-Disposition: form-data; name="lua"\r\n\r\n\r\n \r\n-- A do block provides scoping\r\ndo\r\n    local foo = \'Hello\'\r\n    print(\'Inside the do block, foo is: \', foo)\r\nend\r\n\r\nprint(\'Outside the do block, foo is: \', foo)\r\n\r\n\r\n\r\n\r\n-- if then else\r\n\r\nlocal kittens = 1\r\n\r\nif kittens > 0 then print(\'You have kitten(s)\') end\r\n\r\nif kittens == 0 then \r\n    print(\'You have no kittens\') \r\nelseif kittens == 1 then \r\n    print(\'You have a kitten\') \r\nelse\r\n    print(\'You have many kittens\') \r\nend\r\n\r\n\r\n\r\n-- while\r\n\r\nlocal kittens = { \'Mr Tibbs\', \'Tufty\', \'Kipper\' }\r\n\r\nwhile #kittens > 0 do\r\n    local kitten = table.remove(kittens, 1)\r\n    print(kitten)\r\nend\r\n\r\n\r\n\r\n\r\n-- repeat until\r\n\r\nlocal kittens = { \'Mr Tibbs\', \'Tufty\', \'Kipper\' }\r\n\r\nrepeat \r\n    local kitten = table.remove(kittens, 1)\r\n    print(kitten)\r\nuntil #kittens == 0 \r\n\r\n\r\n\r\n\r\n-- break\r\n\r\nlocal kittens = { \'Mr Tibbs\', \'Tufty\', \'Kipper\' }\r\n\r\nwhile #kittens > 0 do\r\n    local kitten = table.remove(kittens, 1)\r\n    if kitten == \'Tufty\' then break end\r\n    print(kitten)\r\nend\r\n\r\n\r\n\r\n\r\n-- numeric for\r\n\r\nfor i = 1, 10 do            -- count up\r\n    print(i..\' banana\')\r\nend\r\n\r\nfor i = 10, 1, -1 do        -- count down\r\n    print(i..\' green bottles\')\r\nend\r\n\r\nprint(\'i is scoped to the for loop: \', i)\r\n\r\n\r\n\r\n\r\n-- generic for\r\n\r\nlocal random = { \'boot\', foo = \'bar\', 22 }\r\n\r\nfor key, val in ipairs(random) do   -- ipairs iterates over numerical indexed elements only.\r\n    print(key, val) \r\nend\r\n\r\nfor key, val in pairs(random) do   -- pairs iterates over all elements.\r\n    print(key, val) \r\nend\r\n\r\n\r\n\r\n\r\n------WebKitFormBoundarynBWgpDsoWuwgrpfv--\r\n' --compressed

<!DOCTYPE html>
	<html>
	  <head>
		<meta name="viewport" content="width=device-width, initial-scale=1">
		<meta charset="utf-8">
		<title>Application Error</title>
		<style media="screen">
		  html,body,iframe {
			margin: 0;
			padding: 0;
		  }
		  html,body {
			height: 100%;
			overflow: hidden;
		  }
		  iframe {
			width: 100%;
			height: 100%;
			border: 0;
		  }
		</style>
	  </head>
	  <body>
		<iframe src="//www.herokucdn.com/error-pages/application-error.html"></iframe>
	  </body>
	</html>

/home/daurnimator/src/moonshine/distillery/distillery.moonshine.js:79
                        if (err) throw err;
                                       ^
Error: Path must be a string without null bytes.
    at nullCheck (fs.js:119:14)
    at Object.fs.open (fs.js:417:8)
    at Object.fs.readFile (fs.js:206:6)
    at Parser.parse (/home/daurnimator/src/moonshine/distillery/distillery.moonshine.js:78:6)
    at /home/daurnimator/src/moonshine/bin/commands/distil.js:178:10
    at /home/daurnimator/src/moonshine/bin/commands/distil.js:161:3
    at ChildProcess.exithandler (child_process.js:635:7)
    at ChildProcess.EventEmitter.emit (events.js:98:17)
    at maybeClose (child_process.js:735:16)
    at Process.ChildProcess._handle.onexit (child_process.js:802:5)

diff --git a/vm/moonshine.js b/vm/moonshine.js
index 1b2fc37..94f61ca 100644
--- a/vm/moonshine.js
+++ b/vm/moonshine.js
@@ -1380,6 +1380,18 @@ shine.Closure.prototype.dispose = function (force) {
        } else if (typeof b == 'string' && shine.lib.string[c]) {
            result = shine.lib.string[c];

+       } else if (b.__shine) {
+           var mt, __index;
+           if ( (mt = b.__shine.metatable) && (__index = mt.getMember("__index"))) {
+               if (__index instanceof shine.Table) {
+                   result = __index.getMember(c);
+               } else {
+                   result = __index(b, c);
+               }
+           } else {
+               throw new shine.Error('Attempt to index a userdata value');
+           }
+
        } else {
            result = b[c];
        }
@@ -3517,12 +3529,12 @@ var shine = shine || {};
        tostring: function (e) {
            var mt, mm;

-           if (e !== undefined && e instanceof shine.Table && (mt = e.__shine.metatable) && (mm = mt.getMember('__tostring'))) return mm.call(mm, e);
+           if (e !== undefined && typeof e == "object" && (mt = e.__shine.metatable) && (mm = mt.getMember('__tostring'))) return mm.call(mm, e);

            if (e instanceof shine.Table || e instanceof shine.Function) return e.toString();
            if (typeof e == 'function') return 'function: [host code]';

-           return shine.utils.coerce(e, 'string') || 'userdata';
+           return shine.utils.coerce(e, 'string');
        },

diff --git a/extensions/DOMAPI/DOMAPI.moonshine.js b/extensions/DOMAPI/DOMAPI.moonshine.js
index 1c5867b..b2304ff 100644
--- a/extensions/DOMAPI/DOMAPI.moonshine.js
+++ b/extensions/DOMAPI/DOMAPI.moonshine.js
@@ -21,127 +21,101 @@
  */

 (function (shine) {
-
-   function jsToLua (obj) {
-       var t, mt;
-
-       mt = new shine.Table({
-
+   var object_mt = new shine.Table({
        __index: function (t, key) {
-               var property = obj[key];
-
-               // Bind methods to object and convert args and return values
-               if (typeof property == 'function' || (property && property.prototype && typeof property.prototype.constructor == 'function')) { // KLUDGE: Safari reports native constructors as objects, not functions :-s
-                   var f = function () {
-                       var args = convertArguments(arguments, luaToJS),
-                           retval = property.apply(args.shift(), args);
-
-                       if (typeof retval == 'object') return jsToLua(retval);
-                       return [retval];
-                   };
-
-                   // Add a new method for instantiating classes
-                   f.new = function () { 
-                       var args = convertArguments(arguments, luaToJS),
-                           argStr,
-                           obj,
-                           i, l;
-
-                       argStr = (l = args.length)? 'args[0]' : '';
-                       for (i = 1; i < l; i++) argStr += ',args[' + i + ']';
-
-                       obj = eval('new property(' + argStr + ')');
-                       return jsToLua(obj);
-                   };
-
-                   return f;
-               }
-
-               // Recurse down properties
-               if (typeof property == 'object') return jsToLua(property);
-
-               // Return primatives as is
-               return property;
+           return jsToLua(t.__native[key]);
        },
-
-
        __newindex: function (t, key, val) {
-               obj[key] = luaToJS(val);
+           t.__native[key] = luaToJS(val);
+       },
+       __tostring: function (t) {
+           console.log(t,t.__native)
+           return "userdata: " + toString(t.__native);
        }
-
    });

-       mt.source = obj;
-
-
-       t = new shine.Table();
-       shine.gc.incrRef(t);
+   var function_mt = new shine.Table({
+       __call: function(t) {
+           var args = Array.prototype.slice.call(arguments,1).map(luaToJS);
+           return [jsToLua(t.__native.apply(null, args))];
+       },
+       __new: function(t) {
+           var args = Array.prototype.slice.call(arguments,1).map(luaToJS);
+           return [jsToLua(new t._constructor(args))];
+       },
+       __index: object_mt.__index,
+       __newindex: object_mt.__newindex,
+       __tostring: object_mt.__tostring
+   });

-       // Return proxy table
-       return shine.lib.setmetatable(t, mt);
+   function jsToLua (obj) {
+       switch (typeof obj) {
+           case 'undefined':
+           case 'number':
+           case 'boolean':
+           case 'string':
+               return obj;
+           case 'object':
+               if (obj instanceof Number ||
+                   obj instanceof Boolean ||
+                   obj instanceof String) {
+                   return obj.valueOf();
                }
+               return {
+                   __shine: {
+                       metatable: object_mt
+                   },
+                   __native: obj
+               };
+           case 'function':
+               function constructor(args) {
+                   return obj.apply(this, args);
+               }
+               constructor.prototype = obj.prototype;

-
-
+               return {
+                   __shine: {
+                       metatable: function_mt
+                   },
+                   __native: obj,
+                   __constructor: constructor
+               };
+           default:
+               throw "Unable to convert to js value to lua";
+       }
+   }

    function luaToJS (val) {
-       var mt;
-
-       // Make shine.Functions invokable
+       switch (typeof val) {
+           case 'undefined':
+           case 'number':
+           case 'boolean':
+           case 'string':
+           case 'function':
+               return val;
+           case 'object':
                if (val instanceof shine.Function) {
                    return function () {
-               return jsToLua(val.apply(undefined, convertArguments(arguments, jsToLua)));
+                       var args = Array.prototype.slice.call(arguments,0).map(jsToLua);
+                       return jsToLua(val.apply(void 0, args));
                    };
+               } else if (val instanceof shine.Table) {
+                   // TODO: reverse proxy
+                   return shine.utils.toObject(val);
+               } else {
+                   switch(val.__shine) {
+                       case function_mt:
+                       case object_mt:
+                           return val.__native;
+                       default:
+                           throw "Unable to convert userdata object";
                    }
-
-       if (val instanceof shine.Table) {
-           // If object has been wrapped by jsToLua(), use original object instead
-           if ((mt = shine.lib.getmetatable(val)) && mt.source) return mt.source;
-
-           // Else iterate over table
-           var isArr = shine.lib.table.getn(val) > 0,
-               result = shine.gc['create' + (isArr? 'Array' : 'Object')](),
-               numValues = val.__shine.numValues,
-               i,
-               l = numValues.length;
-
-           for (i = 1; i < l; i++) {
-               result[i - 1] = ((numValues[i] || shine.EMPTY_OBJ) instanceof shine.Table)? luaToJS(numValues[i]) : numValues[i];
                }
-
-           for (i in val) {
-               if (val.hasOwnProperty(i) && !(i in shine.Table.prototype) && i !== '__shine') {
-                   result[i] = ((val[i] || shine.EMPTY_OBJ) instanceof shine.Table)? luaToJS(val[i]) : val[i];
+           default:
+               throw "How did this get in the lua vm?"
        }
    }

-           return result;
-       }
-
-
-       // Convert tables to objects
-       if (typeof val == 'object') return shine.utils.toObject(val);
-
-       // return primatives as is
-       return val;
-   }
-
-
-
-
-   function convertArguments (arguments, translateFunc) {
-       var args = [], i, l;
-
-       for (i = 0, l = arguments.length; i < l; i++) {
-           args.push(translateFunc(arguments[i]));
-       }
-
-       return args;
-   };
-
-
-
-
    // Create wrapped window API
    shine.DOMAPI = { window: jsToLua(window) };

pairs
0   zero
1   one
2   two
4   four
-1  negative
foo string
0.5 half
ipairs
1   one
2   two

pairs
1 one
2 two
4 four
foo string
ipairs
1 one
2 two 

 para = window.document:createElement("p") 
  para:createTextNode("abc") 

$ moonshine distil -d target lua
/usr/local/lib/node_modules/moonshine/bin/commands/distil.js:164
        if (errPart[1] != 'luac') throw err;
                                  ^

Error: Command failed: /bin/sh -c luac -o lua/backgrounds test.lua.moonshine.luac lua/backgrounds test.lua
luac: cannot open test.lua.moonshine.luac: No such file or directory

                                   // Add static methods, etc
                if (Object.getOwnPropertyNames) {
                    children = Object.getOwnPropertyNames(property);

                    for (i = 0; child = children[i]; i++) {
                        f[child] = property[child];
                    }  <-- Error here --
                }