diff --git a/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java
index d83c7a92769..7b8c8962067 100644
--- a/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java
+++ b/js/js.tests/test/org/jetbrains/k2js/test/semantics/RegressionMergeEcmaTest.java
@@ -55,9 +55,8 @@ public class RegressionMergeEcmaTest extends SingleFileTranslationTest {
         checkFooBoxIsOk();
     }
 
-    //TODO
-    public void TestRootPackageValInit() throws Exception {
-        checkFooBoxIsOk();
+    public void testRootPackageValInit() throws Exception {
+        runFunctionOutputTest(DEFAULT_ECMA_VERSIONS, getTestName(true) + ".kt", "_", "box", "OK");
     }
 
     public void testIsClassSupport() throws Exception {
diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/context/Namer.java b/js/js.translator/src/org/jetbrains/k2js/translate/context/Namer.java
index bec1d782a2e..8fed189d5d0 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/context/Namer.java
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/context/Namer.java
@@ -159,6 +159,8 @@ public final class Namer {
     @NotNull
     private final JsExpression definePackage;
     @NotNull
+    private final JsExpression defineRootPackage;
+    @NotNull
     private final JsName objectName;
     @NotNull
     private final JsName enumEntriesName;
@@ -172,6 +174,7 @@ public final class Namer {
         traitName = kotlinScope.declareName(TRAIT_OBJECT_NAME);
 
         definePackage = kotlin("definePackage");
+        defineRootPackage = kotlin("defineRootPackage");
 
         className = kotlinScope.declareName(CLASS_OBJECT_NAME);
         enumEntriesName = kotlinScope.declareName(ENUM_ENTRIES_NAME);
@@ -200,6 +203,11 @@ public final class Namer {
         return definePackage;
     }
 
+    @NotNull
+    public JsExpression rootPackageDefinitionMethodReference() {
+        return defineRootPackage;
+    }
+
     @NotNull
     public JsExpression objectCreationMethodReference() {
         return kotlin(objectName);
diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceDeclarationTranslator.java b/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceDeclarationTranslator.java
index 82ee5fc5668..f57ac34285e 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceDeclarationTranslator.java
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceDeclarationTranslator.java
@@ -52,15 +52,15 @@ public final class NamespaceDeclarationTranslator extends AbstractTranslator {
     private List<JsStatement> translate() {
         // predictable order
         Map<NamespaceDescriptor, List<JsExpression>> descriptorToDefineInvocation = new THashMap<NamespaceDescriptor, List<JsExpression>>();
-        JsObjectLiteral rootNamespaceDefinition = null;
+        NamespaceDescriptor rootNamespaceDescriptor = null;
 
         for (JetFile file : files) {
             NamespaceDescriptor descriptor = context().bindingContext().get(BindingContext.FILE_TO_NAMESPACE, file);
             assert descriptor != null;
             NamespaceTranslator translator = descriptorToTranslator.get(descriptor);
             if (translator == null) {
-                if (rootNamespaceDefinition == null) {
-                    rootNamespaceDefinition = getRootPackage(descriptorToDefineInvocation, descriptor);
+                if (rootNamespaceDescriptor == null) {
+                    rootNamespaceDescriptor = getRootPackageDescriptor(descriptorToDefineInvocation, descriptor);
                 }
                 translator = new NamespaceTranslator(descriptor, descriptorToDefineInvocation, context());
                 descriptorToTranslator.put(descriptor, translator);
@@ -69,7 +69,7 @@ public final class NamespaceDeclarationTranslator extends AbstractTranslator {
             translator.translate(file);
         }
 
-        if (rootNamespaceDefinition == null) {
+        if (rootNamespaceDescriptor == null) {
             return Collections.emptyList();
         }
 
@@ -89,20 +89,22 @@ public final class NamespaceDeclarationTranslator extends AbstractTranslator {
         }
 
         vars.addIfHasInitializer(context().classDeclarationTranslator().getDeclaration());
-        vars.addIfHasInitializer(getDeclaration(rootNamespaceDefinition));
+        vars.addIfHasInitializer(getRootPackageDeclaration(descriptorToDefineInvocation.get(rootNamespaceDescriptor)));
         return result;
     }
 
-    private JsObjectLiteral getRootPackage(Map<NamespaceDescriptor, List<JsExpression>> descriptorToDefineInvocation,
-            NamespaceDescriptor descriptor) {
+    @NotNull
+    private NamespaceDescriptor getRootPackageDescriptor(
+            @NotNull Map<NamespaceDescriptor, List<JsExpression>> descriptorToDefineInvocation,
+            @NotNull NamespaceDescriptor descriptor
+    ) {
         NamespaceDescriptor rootNamespace = descriptor;
         while (DescriptorUtils.isTopLevelDeclaration(rootNamespace)) {
             rootNamespace = (NamespaceDescriptor) rootNamespace.getContainingDeclaration();
         }
 
-        JsObjectLiteral rootNamespaceDefinition = new JsObjectLiteral(true);
-        descriptorToDefineInvocation.put(rootNamespace, createDefineInvocation(rootNamespace, null, rootNamespaceDefinition, context()));
-        return rootNamespaceDefinition;
+        descriptorToDefineInvocation.put(rootNamespace, createDefineInvocation(rootNamespace, null, new JsObjectLiteral(true), context()));
+        return rootNamespace;
     }
 
     static List<JsExpression> createDefineInvocation(
@@ -121,16 +123,8 @@ public final class NamespaceDeclarationTranslator extends AbstractTranslator {
         }
     }
 
-    private JsVar getDeclaration(@NotNull JsObjectLiteral rootNamespaceDefinition) {
-        JsExpression packageMapValue;
-        if (context().isEcma5()) {
-            packageMapValue = new JsInvocation(JsAstUtils.CREATE_OBJECT, JsLiteral.NULL,
-                                               new JsDocComment(JsAstUtils.LENDS_JS_DOC_TAG, Namer.getRootNamespaceName()),
-                                               rootNamespaceDefinition);
-        }
-        else {
-            packageMapValue = rootNamespaceDefinition;
-        }
-        return new JsVar(context().scope().declareName(Namer.getRootNamespaceName()), packageMapValue);
+    private JsVar getRootPackageDeclaration(@NotNull List<JsExpression> defineInvocation) {
+        JsExpression rootPackageVar = new JsInvocation(context().namer().rootPackageDefinitionMethodReference(), defineInvocation);
+        return new JsVar(context().scope().declareName(Namer.getRootNamespaceName()), rootPackageVar);
     }
 }
diff --git a/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java b/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
index bdd5f16ea6b..61ffd692982 100644
--- a/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
+++ b/js/js.translator/src/org/jetbrains/k2js/translate/declaration/NamespaceTranslator.java
@@ -197,14 +197,7 @@ final class NamespaceTranslator extends AbstractTranslator {
             if (initializer != null) {
                 JsExpression value = Translation.translateAsExpression(initializer, initializerContext);
                 PropertyDescriptor propertyDescriptor = getPropertyDescriptor(context.bindingContext(), property);
-                if (value instanceof JsLiteral) {
-                    result.add(new JsPropertyInitializer(context.getNameForDescriptor(propertyDescriptor).makeRef(),
-                                                         context().isEcma5() ? JsAstUtils
-                                                                 .createPropertyDataDescriptor(propertyDescriptor, value) : value));
-                }
-                else {
-                    initializerStatements.add(generateInitializerForProperty(context, propertyDescriptor, value));
-                }
+                initializerStatements.add(generateInitializerForProperty(context, propertyDescriptor, value));
             }
 
             JsStatement delegate = generateInitializerForDelegate(context, property);
diff --git a/js/js.translator/testFiles/kotlin_lib_ecma5.js b/js/js.translator/testFiles/kotlin_lib_ecma5.js
index 2e8c79fe121..f54c3ba39c3 100644
--- a/js/js.translator/testFiles/kotlin_lib_ecma5.js
+++ b/js/js.translator/testFiles/kotlin_lib_ecma5.js
@@ -244,11 +244,22 @@ var KotlinNew = {};
         }
     };
 
+    KotlinNew.defineRootPackage = function (initializer, members) {
+        var definition = Object.create(null, members === null ? undefined : members);
+
+        if (initializer === null) {
+            definition.$initializer = emptyFunction;
+        } else {
+            definition.$initializer = initializer;
+        }
+        return definition;
+      };
+
     KotlinNew.defineModule = function (id, module) {
         if (id in Kotlin.modules) {
-            throw Kotlin.$new(Kotlin.IllegalArgumentException)();
+            throw new Kotlin.IllegalArgumentException();
         }
-
+        module.$initializer.call(module);
         Object.defineProperty(Kotlin.modules, id, {value: module});
     };
 
@@ -310,6 +321,10 @@ var Kotlin = Object.create(null);
         return KotlinNew.definePackage(initializer, members);
     };
 
+    Kotlin.defineRootPackage = function (initializer, members) {
+        return KotlinNew.defineRootPackage(initializer, members);
+    };
+
     Kotlin.defineModule = function (id, module) {
         KotlinNew.defineModule(id, module);
     };