Another fix for super.

transcrypt/development/automated_tests/transcrypt/builtin_super/__init__.py

@@ -149,10 +149,21 @@ def plugin(self, call_order):
     class Child(Mixin, Base):
         pass
 
+    class GrandChild(Child):
+        pass
+
     call_order = []
     mixed = Child(call_order)
     autoTester.check (call_order)
 
     call_order = []
     mixed.plugin(call_order)
     autoTester.check (call_order)
+
+    call_order = []
+    mixed = GrandChild(call_order)
+    autoTester.check (call_order)
+
+    call_order = []
+    mixed.plugin(call_order)
+    autoTester.check (call_order)

transcrypt/modules/org/transcrypt/__builtin__.js

@@ -70,7 +70,7 @@ function create_next_super(cls) {
   return function(methodName) {
       while(index < mro.length) {
           let base = mro[index++];
-          if (methodName in base)
+          if (methodName in base.__class_attribs__)
               return base;
       }
       throw new Exception ('Superclass method not found');    // !!! Improve!

transcrypt/modules/org/transcrypt/__core__.js

@@ -197,6 +197,7 @@ function _to_python_descriptor(instance, descript) {
 export var py_metatype = {
     __name__: 'type',
     __bases__: [],
+    __class_attribs__: {__init__: true},
 
     // Overridable class creation worker
     __new__: function (meta, name, bases, attribs) {
@@ -233,6 +234,7 @@ export var py_metatype = {
         cls.__metaclass__ = meta;
         cls.__name__ = name.startsWith ('py_') ? name.slice (3) : name;
         cls.__bases__ = bases;
+        cls.__class_attribs__ = attribs;
 
         if (! ("__init__" in attribs)) {
             attribs["__init__"] = function() {
@@ -271,6 +273,7 @@ export var object = {
 
     __metaclass__: py_metatype, // By default, all classes have metaclass type, since they derive from object
     __name__: 'object',
+    __class_attribs__: {__init__: true},
     __bases__: [],
 
     // Object creator function, is inherited by all classes (so could be global)