JsException: ReferenceError: Promise is not defined

[rodolfogf-dev]

Im using stacktrace lib to do some conversions of stack frame erros that happens in javascript, to understand better and convert in a more human readable way.
However, this lib uses promises in some functions, and when I call then through js2py I get the error:

JsException: ReferenceError: Promise is not defined

Ex in python:

import js2py 
StackGPS = js2py.require('stacktrace-gps');
Promise = js2py.require('promise');

StackGPS({... a bunch of object information }).pinpoint() <- this function returns a promise

And after executing the process i get the error related above. Im missing something? Does js2py supports promises on the actual version??

[rodolfogf-dev]

stacktrace from error

C:\Python\lib\site-packages\js2py\base.py in __call__(self, *args)
   1201         if '_prop_of' in self.__dict__:
   1202             parent, meth = self.__dict__['_prop_of']
-> 1203             return to_python(parent._obj.callprop(meth, *args))
   1204         return to_python(self._obj(*args))
   1205 

C:\Python\lib\site-packages\js2py\base.py in callprop(self, prop, *args)
    994                             '%s is not a function (tried calling property %s of %s)' % (
    995                             cand.typeof(), repr(prop), repr(self.Class)))
--> 996         return cand.call(self, args)
    997 
    998     def to_python(self):

C:\Python\lib\site-packages\js2py\base.py in call(self, this, args)
   1462         args += this, arguments  #append extra params to the arg list
   1463         try:
-> 1464             return Js(self.code(*args))
   1465         except NotImplementedError:
   1466             raise

<string> in PyJs_InlineNonPyName_83_(stackframe, this, arguments, var)

C:\Python\lib\site-packages\js2py\base.py in get(self, prop, throw)
   1151             cand = self.own.get(prop)
   1152             if cand is None:
-> 1153                 return self.prototype.get(prop, throw)
   1154             return cand
   1155         # slow, global scope

C:\Python\lib\site-packages\js2py\base.py in get(self, prop, throw)
   1151             cand = self.own.get(prop)
   1152             if cand is None:
-> 1153                 return self.prototype.get(prop, throw)
   1154             return cand
   1155         # slow, global scope

C:\Python\lib\site-packages\js2py\base.py in get(self, prop, throw)
   1151             cand = self.own.get(prop)
   1152             if cand is None:
-> 1153                 return self.prototype.get(prop, throw)
   1154             return cand
   1155         # slow, global scope

C:\Python\lib\site-packages\js2py\base.py in get(self, prop, throw)
   1151             cand = self.own.get(prop)
   1152             if cand is None:
-> 1153                 return self.prototype.get(prop, throw)
   1154             return cand
   1155         # slow, global scope

C:\Python\lib\site-packages\js2py\base.py in get(self, prop, throw)
   1156         if prop not in self.own:
   1157             if throw:
-> 1158                 raise MakeError('ReferenceError', '%s is not defined' % prop)
   1159             return undefined
   1160         return PyJs.get(self, prop)

JsException: ReferenceError: Promise is not defined