easy-super.js

var punchSuper($super, klas) {
  var keys = Object.keys(klas);
  for (var i = 0, len = keys.length; i < len; i++) {
    var val = keys[i];
    if (typeof val === "function") {
      val.$super = $super;
    }
  }
};

var Parent = {
  method: function () {}
};

var Child = punchSuper(Parent, Object.make(Parent, {
  method: function () {}
}));