diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/expression/foreach/RangeForTranslator.java b/js/js.translator/src/org/jetbrains/k2js/translate/expression/foreach/RangeForTranslator.java
index da41a113db5..19f84fe055d 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/expression/foreach/RangeForTranslator.java
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/expression/foreach/RangeForTranslator.java
@@ -63,9 +63,9 @@ public final class RangeForTranslator extends ForTranslator {
     private RangeForTranslator(@NotNull JetForExpression forExpression, @NotNull TranslationContext context) {
         super(forExpression, context);
         rangeExpression = context.declareTemporary(Translation.translateAsExpression(getLoopRange(expression), context));
-        start = context().declareTemporary(callFunction("get_start"));
-        end = context().declareTemporary(callFunction("get_end"));
-        increment = context().declareTemporary(callFunction("get_increment"));
+        start = context().declareTemporary(getProperty("start"));
+        end = context().declareTemporary(getProperty("end"));
+        increment = context().declareTemporary(getProperty("increment"));
     }
 
     @NotNull
@@ -99,7 +99,7 @@ public final class RangeForTranslator extends ForTranslator {
     }
 
     @NotNull
-    private JsExpression callFunction(@NotNull String funName) {
-        return new JsInvocation(new JsNameRef(funName, rangeExpression.reference()));
+    private JsExpression getProperty(@NotNull String funName) {
+        return new JsNameRef(funName, rangeExpression.reference());
     }
 }
diff --git a/js/js.translator/testFiles/kotlinLib/cases/hashMap.js b/js/js.translator/testFiles/kotlinLib/cases/hashMap.js
index 4fd806a555a..6aa2d158401 100644
--- a/js/js.translator/testFiles/kotlinLib/cases/hashMap.js
+++ b/js/js.translator/testFiles/kotlinLib/cases/hashMap.js
@@ -14,10 +14,10 @@
  * limitations under the License.
  */
 
-var map = Kotlin.$new(Kotlin.HashMap)()
+var map = new Kotlin.HashMap();
 
-map.put(3, 4)
-map.put(6, 3)
+map.put(3, 4);
+map.put(6, 3);
 
 function test() {
     if (map.containsKey(4) || map.containsKey(5)) return false;
diff --git a/js/js.translator/testFiles/kotlinLib/cases/isSameType.js b/js/js.translator/testFiles/kotlinLib/cases/isSameType.js
index 6978b10c488..612ed1460d2 100644
--- a/js/js.translator/testFiles/kotlinLib/cases/isSameType.js
+++ b/js/js.translator/testFiles/kotlinLib/cases/isSameType.js
@@ -15,7 +15,7 @@
  */
 
 var A = Kotlin.createClass();
-var a = Kotlin.$new(A)();
+var a = new A();
 
 function test() {
     return Kotlin.isType(a, A);
diff --git a/js/js.translator/testFiles/kotlin_lib.js b/js/js.translator/testFiles/kotlin_lib.js
index 03bae487702..b49c0292f79 100644
--- a/js/js.translator/testFiles/kotlin_lib.js
+++ b/js/js.translator/testFiles/kotlin_lib.js
@@ -63,25 +63,25 @@ String.prototype.contains = function (s) {
     };
 
     Kotlin.intUpto = function (from, to) {
-        return Kotlin.$new(Kotlin.NumberRange)(from, to);
+        return new Kotlin.NumberRange(from, to);
     };
 
     Kotlin.intDownto = function (from, to) {
-        return Kotlin.$new(Kotlin.Progression)(from, to, -1);
+        return new Kotlin.Progression(from, to, -1);
     };
 
     Kotlin.modules = {};
 
-    Kotlin.RuntimeException = Kotlin.$createClass();
-    Kotlin.NullPointerException = Kotlin.$createClass();
-    Kotlin.NoSuchElementException = Kotlin.$createClass();
-    Kotlin.IllegalArgumentException = Kotlin.$createClass();
-    Kotlin.IllegalStateException = Kotlin.$createClass();
-    Kotlin.UnsupportedOperationException = Kotlin.$createClass();
-    Kotlin.IOException = Kotlin.$createClass();
+    Kotlin.RuntimeException = KotlinNew.createClass();
+    Kotlin.NullPointerException = KotlinNew.createClass();
+    Kotlin.NoSuchElementException = KotlinNew.createClass();
+    Kotlin.IllegalArgumentException = KotlinNew.createClass();
+    Kotlin.IllegalStateException = KotlinNew.createClass();
+    Kotlin.UnsupportedOperationException = KotlinNew.createClass();
+    Kotlin.IOException = KotlinNew.createClass();
 
     Kotlin.throwNPE = function () {
-        throw Kotlin.$new(Kotlin.NullPointerException)();
+        throw new Kotlin.NullPointerException();
     };
 
     function throwAbstractFunctionInvocationError(funName) {
@@ -96,54 +96,52 @@ String.prototype.contains = function (s) {
         };
     }
 
-    Kotlin.Iterator = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Iterator = KotlinNew.createClass(null, null, {
         next: throwAbstractFunctionInvocationError("Iterator#next"),
         hasNext: throwAbstractFunctionInvocationError("Iterator#hasNext")
     });
 
-    var ArrayIterator = Kotlin.$createClass(Kotlin.Iterator, {
-        initialize: function (array) {
+    var ArrayIterator = KotlinNew.createClass(Kotlin.Iterator,
+        function (array) {
             this.array = array;
             this.size = array.length;
             this.index = 0;
-        },
-        next: function () {
-            return this.array[this.index++];
-        },
-        hasNext: function () {
-            return this.index < this.size;
-        }
+        }, {
+            next: function () {
+                return this.array[this.index++];
+            },
+            hasNext: function () {
+                return this.index < this.size;
+            }
     });
 
-    var ListIterator = Kotlin.$createClass(ArrayIterator, {
-        initialize: function (list) {
+    var ListIterator = KotlinNew.createClass(ArrayIterator,
+        function (list) {
             this.list = list;
             this.size = list.size();
             this.index = 0;
-        },
-        next: function () {
-            return this.list.get(this.index++);
-        }
+        }, {
+            next: function () {
+                return this.list.get(this.index++);
+            }
     });
 
-    Kotlin.Collection = Kotlin.$createClass();
+    Kotlin.Collection = KotlinNew.createClass();
 
-    Kotlin.Enum = Kotlin.$createClass(null, {
-        initialize: function () {
+    Kotlin.Enum = KotlinNew.createClass(null,
+        function () {
             this.name$ = undefined;
             this.ordinal$ = undefined;
-        },
-        name: function () {
-            return this.name$;
-        },
-        ordinal: function () {
-            return this.ordinal$;
-        },
-        toString: function () {
-            return this.name();
-        }
+        }, {
+            name: function () {
+                return this.name$;
+            },
+            ordinal: function () {
+                return this.ordinal$;
+            },
+            toString: function () {
+                return this.name();
+            }
     });
     (function (){
         function valueOf(name) {
@@ -172,16 +170,13 @@ String.prototype.contains = function (s) {
         };
     })();
 
-    Kotlin.PropertyMetadata = Kotlin.$createClass(null, {
-        initialize: function(name) {
-            this.$name = name;
-        },
-        get_name: function () {
-            return this.$name;
+    Kotlin.PropertyMetadata = KotlinNew.createClass(null,
+        function(name) {
+            this.name = name;
         }
-    });
+    );
 
-    Kotlin.AbstractCollection = Kotlin.$createClass(Kotlin.Collection, {
+    Kotlin.AbstractCollection = KotlinNew.createClass(Kotlin.Collection, null, {
         size: function () {
             return this.$size;
         },
@@ -196,7 +191,7 @@ String.prototype.contains = function (s) {
             return this.size() === 0;
         },
         iterator: function () {
-            return Kotlin.$new(ArrayIterator)(this.toArray());
+            return new ArrayIterator(this.toArray());
         },
         equals: function (o) {
             if (this.size() !== o.size()) return false;
@@ -234,9 +229,9 @@ String.prototype.contains = function (s) {
         }
     });
 
-    Kotlin.AbstractList = Kotlin.$createClass(Kotlin.AbstractCollection, {
+    Kotlin.AbstractList = KotlinNew.createClass(Kotlin.AbstractCollection, null, {
         iterator: function () {
-            return Kotlin.$new(ListIterator)(this);
+            return new ListIterator(this);
         },
         remove: function (o) {
             var index = this.indexOf(o);
@@ -250,94 +245,86 @@ String.prototype.contains = function (s) {
     });
 
     //TODO: should be JS Array-like (https://developer.mozilla.org/en-US/docs/JavaScript/Guide/Predefined_Core_Objects#Working_with_Array-like_objects)
-    Kotlin.ArrayList = Kotlin.$createClass(Kotlin.AbstractList, {
-        initialize: function () {
+    Kotlin.ArrayList = KotlinNew.createClass(Kotlin.AbstractList,
+        function () {
             this.array = [];
             this.$size = 0;
-        },
-        get: function (index) {
-            this.checkRange(index);
-            return this.array[index];
-        },
-        set: function (index, value) {
-            this.checkRange(index);
-            this.array[index] = value;
-        },
-        size: function () {
-            return this.$size;
-        },
-        iterator: function () {
-            return Kotlin.arrayIterator(this.array);
-        },
-        add: function (element) {
-            this.array[this.$size++] = element;
-        },
-        addAt: function (index, element) {
-            this.array.splice(index, 0, element);
-            this.$size++;
-        },
-        addAll: function (collection) {
-            var it = collection.iterator();
-            for (var i = this.$size, n = collection.size(); n-- > 0;) {
-                this.array[i++] = it.next();
-            }
+        }, {
+            get: function (index) {
+                this.checkRange(index);
+                return this.array[index];
+            },
+            set: function (index, value) {
+                this.checkRange(index);
+                this.array[index] = value;
+            },
+            size: function () {
+                return this.$size;
+            },
+            iterator: function () {
+                return Kotlin.arrayIterator(this.array);
+            },
+            add: function (element) {
+                this.array[this.$size++] = element;
+            },
+            addAt: function (index, element) {
+                this.array.splice(index, 0, element);
+                this.$size++;
+            },
+            addAll: function (collection) {
+                var it = collection.iterator();
+                for (var i = this.$size, n = collection.size(); n-- > 0;) {
+                    this.array[i++] = it.next();
+                }
 
-            this.$size += collection.size();
-        },
-        removeAt: function (index) {
-            this.checkRange(index);
-            this.$size--;
-            return this.array.splice(index, 1)[0];
-        },
-        clear: function () {
-            this.array.length = 0;
-            this.$size = 0;
-        },
-        indexOf: function (o) {
-            for (var i = 0, n = this.$size; i < n; ++i) {
-                if (Kotlin.equals(this.array[i], o)) {
-                    return i;
+                this.$size += collection.size();
+            },
+            removeAt: function (index) {
+                this.checkRange(index);
+                this.$size--;
+                return this.array.splice(index, 1)[0];
+            },
+            clear: function () {
+                this.array.length = 0;
+                this.$size = 0;
+            },
+            indexOf: function (o) {
+                for (var i = 0, n = this.$size; i < n; ++i) {
+                    if (Kotlin.equals(this.array[i], o)) {
+                        return i;
+                    }
+                }
+                return -1;
+            },
+            toArray: function () {
+                return this.array.slice(0, this.$size);
+            },
+            toString: function () {
+                return "[" + this.array.join(", ") + "]";
+            },
+            toJSON: function () {
+                return this.array;
+            },
+            checkRange: function(index) {
+                if (index < 0 || index >= this.$size) {
+                    throw new RangeError();
                 }
             }
-            return -1;
-        },
-        toArray: function () {
-            return this.array.slice(0, this.$size);
-        },
-        toString: function () {
-            return "[" + this.array.join(", ") + "]";
-        },
-        toJSON: function () {
-            return this.array;
-        },
-        checkRange: function(index) {
-            if (index < 0 || index >= this.$size) {
-                throw new RangeError();
-            }
-        }
     });
 
-    Kotlin.Runnable = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Runnable = KotlinNew.createClass(null, null, {
         run: throwAbstractFunctionInvocationError("Runnable#run")
     });
 
-    Kotlin.Comparable = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Comparable = KotlinNew.createClass(null, null, {
         compareTo: throwAbstractFunctionInvocationError("Comparable#compareTo")
     });
 
-    Kotlin.Appendable = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Appendable = KotlinNew.createClass(null, null, {
         append: throwAbstractFunctionInvocationError("Appendable#append")
     });
 
-    Kotlin.Closeable = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Closeable = KotlinNew.createClass(null, null, {
         close: throwAbstractFunctionInvocationError("Closeable#close")
     });
 
@@ -409,91 +396,60 @@ String.prototype.contains = function (s) {
         Kotlin.System.out().print(s);
     };
 
-    Kotlin.RangeIterator = Kotlin.$createClass(Kotlin.Iterator, {
-        initialize: function (start, end, increment) {
-            this.$start = start;
-            this.$end = end;
-            this.$increment = increment;
-            this.$i = start;
-        },
-        get_start: function () {
-            return this.$start;
-        },
-        get_end: function () {
-            return this.$end;
-        },
-        get_i: function () {
-            return this.$i;
-        },
-        set_i: function (tmp$0) {
-            this.$i = tmp$0;
-        },
-        next: function () {
-            var value = this.$i;
-            this.set_i(this.$i + this.$increment);
-            return value;
-        },
-        hasNext: function () {
-            return this.get_count() > 0;
-        }
+    Kotlin.RangeIterator = KotlinNew.createClass(Kotlin.Iterator,
+        function (start, end, increment) {
+            this.start = start;
+            this.end = end;
+            this.increment = increment;
+            this.i = start;
+        }, {
+            next: function () {
+                var value = this.i;
+                this.i = this.i + this.increment;
+                return value;
+            },
+            hasNext: function () {
+                return this.i <= this.end;
+            }
     });
 
-    Kotlin.NumberRange = Kotlin.$createClass({
-        initialize: function (start, end) {
-            this.$start = start;
-            this.$end = end;
-        },
-        get_start: function () {
-            return this.$start;
-        },
-        get_end: function () {
-            return this.$end;
-        },
-        get_increment: function () {
-            return 1;
-        },
-        contains: function (number) {
-            return this.$start <= number && number <= this.$end;
-        },
+    Kotlin.NumberRange = KotlinNew.createClass(null,
+        function (start, end) {
+            this.start = start;
+            this.end = end;
+            this.increment = 1;
+        }, {
+            contains: function (number) {
+                return this.start <= number && number <= this.end;
+            },
+            iterator: function () {
+                return new Kotlin.RangeIterator(this.start, this.end);
+            }
+    });
+
+    Kotlin.Progression = KotlinNew.createClass(null,
+        function (start, end, increment) {
+            this.start = start;
+            this.end = end;
+            this.increment = increment;
+        }, {
         iterator: function () {
-            return Kotlin.$new(Kotlin.RangeIterator)(this.get_start(), this.get_end());
+            return new Kotlin.RangeIterator(this.start, this.end, this.increment);
         }
     });
 
-    Kotlin.Progression = Kotlin.$createClass({
-        initialize: function (start, end, increment) {
-            this.$start = start;
-            this.$end = end;
-            this.$increment = increment;
-        },
-        get_start: function () {
-            return this.$start;
-        },
-        get_end: function () {
-            return this.$end;
-        },
-        get_increment: function () {
-            return this.$increment;
-        },
-        iterator: function () {
-            return Kotlin.$new(Kotlin.RangeIterator)(this.get_start(), this.get_end(), this.get_increment());
-        }
-    });
-
-    Kotlin.Comparator = Kotlin.$createClass({
-        initialize: function () {
-        },
+    Kotlin.Comparator = KotlinNew.createClass(null, null, {
         compare: throwAbstractFunctionInvocationError("Comparator#compare")
     });
 
-    var ComparatorImpl = Kotlin.$createClass(Kotlin.Comparator, {
-        initialize: function (comparator) {
+    var ComparatorImpl = KotlinNew.createClass(Kotlin.Comparator,
+        function (comparator) {
             this.compare = comparator;
         }
-    });
+    );
 
     Kotlin.comparator = function (f) {
-        return Kotlin.$new(ComparatorImpl)(f);
+        return new ComparatorImpl(f);
     };
 
     Kotlin.collectionsMax = function (c, comp) {
@@ -537,19 +493,17 @@ String.prototype.contains = function (s) {
     };
 
 
-    Kotlin.StringBuilder = Kotlin.$createClass(
-            {
-                initialize:function () {
-                    this.string = "";
-                },
-                append:function (obj) {
-                    this.string = this.string + obj.toString();
-                },
-                toString:function () {
-                    return this.string;
-                }
-            }
-    );
+    Kotlin.StringBuilder = KotlinNew.createClass(null,
+        function () {
+            this.string = "";
+        }, {
+        append:function (obj) {
+            this.string = this.string + obj.toString();
+        },
+        toString:function () {
+            return this.string;
+        }
+    });
 
     Kotlin.splitString = function (str, regex, limit) {
         return str.split(new RegExp(regex), limit);
@@ -585,11 +539,11 @@ String.prototype.contains = function (s) {
     };
 
     Kotlin.arrayIndices = function (arr) {
-        return Kotlin.$new(Kotlin.NumberRange)(0, arr.length - 1);
+        return new Kotlin.NumberRange(0, arr.length - 1);
     };
 
     Kotlin.arrayIterator = function (array) {
-        return Kotlin.$new(ArrayIterator)(array);
+        return new ArrayIterator(array);
     };
 
     Kotlin.jsonFromTuples = function (pairArr) {
diff --git a/js/js.translator/testFiles/kotlin_lib_ecma5.js b/js/js.translator/testFiles/kotlin_lib_ecma5.js
index df153d8e9b0..2e8c79fe121 100644
--- a/js/js.translator/testFiles/kotlin_lib_ecma5.js
+++ b/js/js.translator/testFiles/kotlin_lib_ecma5.js
@@ -314,51 +314,6 @@ var Kotlin = Object.create(null);
         KotlinNew.defineModule(id, module);
     };
 
-
-    Kotlin.$new = function (f) {
-        var o = Object.create(f.prototype);
-        return function () {
-            f.apply(o, arguments);
-            return o;
-        };
-    };
-
-    Kotlin.$createClass = function (parent, properties) {
-        if (parent !== null && typeof (parent) != "function") {
-            properties = parent;
-            parent = null;
-        }
-
-        var initializer = null;
-        var descriptors = properties ? {} : null;
-        if (descriptors != null) {
-            var ownPropertyNames = Object.getOwnPropertyNames(properties);
-            for (var i = 0, n = ownPropertyNames.length; i < n; i++) {
-                var name = ownPropertyNames[i];
-                var value = properties[name];
-                if (name == "initialize") {
-                    initializer = value;
-                }
-                else if (name.indexOf("get_") === 0) {
-                    descriptors[name.substring(4)] = {get: value};
-                    // std lib code can refers to
-                    descriptors[name] = {value: value};
-                }
-                else if (name.indexOf("set_") === 0) {
-                    descriptors[name.substring(4)] = {set: value};
-                    // std lib code can refers to
-                    descriptors[name] = {value: value};
-                }
-                else {
-                    // we assume all our std lib functions are open
-                    descriptors[name] = {value: value, writable: true};
-                }
-            }
-        }
-
-        return Kotlin.createClass(parent || null, initializer, descriptors);
-    };
-
 })();
 
 
diff --git a/js/js.translator/testFiles/maps.js b/js/js.translator/testFiles/maps.js
index e9d381b5e04..e965027a2df 100644
--- a/js/js.translator/testFiles/maps.js
+++ b/js/js.translator/testFiles/maps.js
@@ -299,7 +299,7 @@
         this.values = function () {
             var values = this._values();
             var i = values.length;
-            var result = Kotlin.$new(Kotlin.ArrayList)();
+            var result = new Kotlin.ArrayList();
             while (i--) {
                 result.add(values[i]);
             }
@@ -371,7 +371,7 @@
         };
 
         this.keySet = function () {
-            var res = Kotlin.$new(Kotlin.ComplexHashSet)();
+            var res = new Kotlin.ComplexHashSet();
             var keys = this._keys();
             var i = keys.length;
             while (i--) {
@@ -385,159 +385,161 @@
     Kotlin.HashTable = Hashtable;
 })();
 
-Kotlin.Map = Kotlin.$createClass();
+Kotlin.Map = KotlinNew.createClass();
 
-Kotlin.HashMap = Kotlin.$createClass(Kotlin.Map, {initialize: function () {
-    Kotlin.HashTable.call(this);
-}});
+Kotlin.HashMap = KotlinNew.createClass(Kotlin.Map,
+    function () {
+        Kotlin.HashTable.call(this);
+    }
+);
 
 Kotlin.ComplexHashMap = Kotlin.HashMap;
 
 (function () {
-    var PrimitiveHashMapValuesIterator = Kotlin.$createClass(Kotlin.Iterator, {
-        initialize: function (map, keys) {
+    var PrimitiveHashMapValuesIterator = KotlinNew.createClass(Kotlin.Iterator,
+        function (map, keys) {
             this.map = map;
             this.keys = keys;
             this.size = keys.length;
             this.index = 0;
-        },
-        next: function () {
-            return this.map[this.keys[this.index++]];
-        },
-        hasNext: function () {
-            return this.index < this.size;
-        }
+        }, {
+            next: function () {
+                return this.map[this.keys[this.index++]];
+            },
+            hasNext: function () {
+                return this.index < this.size;
+            }
     });
 
-    var PrimitiveHashMapValues = Kotlin.$createClass(Kotlin.Collection, {
-        initialize: function (map) {
+    var PrimitiveHashMapValues = KotlinNew.createClass(Kotlin.Collection,
+        function (map) {
             this.map = map;
-        },
-        iterator: function () {
-            return Kotlin.$new(PrimitiveHashMapValuesIterator)(this.map.map, Kotlin.keys(this.map.map));
-        },
-        isEmpty: function () {
-            return this.map.$size === 0;
-        },
-        contains: function (o) {
-            return this.map.containsValue(o);
-        }
+        }, {
+            iterator: function () {
+                return new PrimitiveHashMapValuesIterator(this.map.map, Kotlin.keys(this.map.map));
+            },
+            isEmpty: function () {
+                return this.map.$size === 0;
+            },
+            contains: function (o) {
+                return this.map.containsValue(o);
+            }
     });
 
-    Kotlin.PrimitiveHashMap = Kotlin.$createClass(Kotlin.Map, {
-        initialize: function () {
+    Kotlin.PrimitiveHashMap = KotlinNew.createClass(Kotlin.Map,
+        function () {
             this.$size = 0;
             this.map = {};
-        },
-        size: function () {
-            return this.$size;
-        },
-        isEmpty: function () {
-            return this.$size === 0;
-        },
-        containsKey: function (key) {
-            return this.map[key] !== undefined;
-        },
-        containsValue: function (value) {
-            var map = this.map;
-            for (var key in map) {
-                if (map.hasOwnProperty(key) && map[key] === value) {
-                    return true;
+        }, {
+            size: function () {
+                return this.$size;
+            },
+            isEmpty: function () {
+                return this.$size === 0;
+            },
+            containsKey: function (key) {
+                return this.map[key] !== undefined;
+            },
+            containsValue: function (value) {
+                var map = this.map;
+                for (var key in map) {
+                    if (map.hasOwnProperty(key) && map[key] === value) {
+                        return true;
+                    }
                 }
-            }
 
-            return false;
+                return false;
+            },
+            get: function (key) {
+                return this.map[key];
+            },
+            put: function (key, value) {
+                var prevValue = this.map[key];
+                this.map[key] = value === undefined ? null : value;
+                if (prevValue === undefined) {
+                    this.$size++;
+                }
+                return prevValue;
+            },
+            remove: function (key) {
+                var prevValue = this.map[key];
+                if (prevValue !== undefined) {
+                    delete this.map[key];
+                    this.$size--;
+                }
+                return prevValue;
+            },
+            clear: function () {
+                this.$size = 0;
+                this.map = {};
+            },
+            putAll: function (fromMap) {
+                var map = fromMap.map;
+                for (var key in map) {
+                    if (map.hasOwnProperty(key)) {
+                        this.map[key] = map[key];
+                        this.$size++;
+                    }
+                }
+            },
+            keySet: function () {
+                var result = new Kotlin.PrimitiveHashSet();
+                var map = this.map;
+                for (var key in map) {
+                    if (map.hasOwnProperty(key)) {
+                        result.add(key);
+                    }
+                }
+
+                return result;
+            },
+            values: function () {
+                return new PrimitiveHashMapValues(this);
+            },
+            toJSON: function () {
+                return this.map;
+            }
+    });
+}());
+
+Kotlin.Set = KotlinNew.createClass(Kotlin.Collection);
+
+Kotlin.PrimitiveHashSet = KotlinNew.createClass(Kotlin.AbstractCollection,
+    function () {
+        this.$size = 0;
+        this.map = {};
+    }, {
+        contains: function (key) {
+            return this.map[key] === true;
         },
-        get: function (key) {
-            return this.map[key];
-        },
-        put: function (key, value) {
-            var prevValue = this.map[key];
-            this.map[key] = value === undefined ? null : value;
-            if (prevValue === undefined) {
+        add: function (element) {
+            var prevElement = this.map[element];
+            this.map[element] = true;
+            if (prevElement === true) {
+                return false;
+            }
+            else {
                 this.$size++;
+                return true;
             }
-            return prevValue;
         },
-        remove: function (key) {
-            var prevValue = this.map[key];
-            if (prevValue !== undefined) {
-                delete this.map[key];
+        remove: function (element) {
+            if (this.map[element] === true) {
+                delete this.map[element];
                 this.$size--;
+                return true;
+            }
+            else {
+                return false;
             }
-            return prevValue;
         },
         clear: function () {
             this.$size = 0;
             this.map = {};
         },
-        putAll: function (fromMap) {
-            var map = fromMap.map;
-            for (var key in map) {
-                if (map.hasOwnProperty(key)) {
-                    this.map[key] = map[key];
-                    this.$size++;
-                }
-            }
-        },
-        keySet: function () {
-            var result = Kotlin.$new(Kotlin.PrimitiveHashSet)();
-            var map = this.map;
-            for (var key in map) {
-                if (map.hasOwnProperty(key)) {
-                    result.add(key);
-                }
-            }
-
-            return result;
-        },
-        values: function () {
-            return Kotlin.$new(PrimitiveHashMapValues)(this);
-        },
-        toJSON: function () {
-            return this.map;
+        toArray: function () {
+            return Kotlin.keys(this.map);
         }
-    });
-}());
-
-Kotlin.Set = Kotlin.$createClass(Kotlin.Collection);
-
-Kotlin.PrimitiveHashSet = Kotlin.$createClass(Kotlin.AbstractCollection, {
-    initialize: function () {
-        this.$size = 0;
-        this.map = {};
-    },
-    contains: function (key) {
-        return this.map[key] === true;
-    },
-    add: function (element) {
-        var prevElement = this.map[element];
-        this.map[element] = true;
-        if (prevElement === true) {
-            return false;
-        }
-        else {
-            this.$size++;
-            return true;
-        }
-    },
-    remove: function (element) {
-        if (this.map[element] === true) {
-            delete this.map[element];
-            this.$size--;
-            return true;
-        }
-        else {
-            return false;
-        }
-    },
-    clear: function () {
-        this.$size = 0;
-        this.map = {};
-    },
-    toArray: function () {
-        return Kotlin.keys(this.map);
-    }
 });
 
 (function () {
@@ -660,9 +662,11 @@ Kotlin.PrimitiveHashSet = Kotlin.$createClass(Kotlin.AbstractCollection, {
         };
     }
 
-    Kotlin.HashSet = Kotlin.$createClass(Kotlin.Set, {initialize: function () {
-        HashSet.call(this);
-    }});
+    Kotlin.HashSet = KotlinNew.createClass(Kotlin.Set,
+        function () {
+            HashSet.call(this);
+        }
+    );
 
     Kotlin.ComplexHashSet = Kotlin.HashSet;
 }());
diff --git a/js/js.translator/testFiles/native/native/library.js b/js/js.translator/testFiles/native/native/library.js
index 4344d49c631..cd203a81e78 100644
--- a/js/js.translator/testFiles/native/native/library.js
+++ b/js/js.translator/testFiles/native/native/library.js
@@ -17,9 +17,8 @@
 (function () {
     var c = 0;
 
-    Kotlin.A = Kotlin.$createClass(
-        {
-            initialize:function () {
+    Kotlin.A = KotlinNew.createClass(null,
+            function () {
                 this.f = function(i) {
                     if (i === undefined && c === 0) {
                         c = 1;
@@ -29,7 +28,7 @@
                     }
                 }
             }
-        });
+        );
     Kotlin.getResult = function () {
         return c === 2;
     };