diff --git a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/HashCalculatorForIC.kt b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/HashCalculatorForIC.kt
index 36a0bc1fa87..a365f999deb 100644
--- a/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/HashCalculatorForIC.kt
+++ b/compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/ic/HashCalculatorForIC.kt
@@ -10,15 +10,14 @@ import org.jetbrains.kotlin.config.CompilerConfiguration
 import org.jetbrains.kotlin.config.CompilerConfigurationKey
 import org.jetbrains.kotlin.config.KotlinCompilerVersion
 import org.jetbrains.kotlin.config.languageVersionSettings
+import org.jetbrains.kotlin.descriptors.Modality
 import org.jetbrains.kotlin.ir.backend.js.transformers.irToJs.CrossModuleReferences
 import org.jetbrains.kotlin.ir.IrElement
-import org.jetbrains.kotlin.ir.declarations.IrAnnotationContainer
-import org.jetbrains.kotlin.ir.declarations.IrFunction
-import org.jetbrains.kotlin.ir.declarations.IrProperty
-import org.jetbrains.kotlin.ir.declarations.IrTypeParametersContainer
+import org.jetbrains.kotlin.ir.declarations.*
 import org.jetbrains.kotlin.ir.linkage.partial.PartialLinkageConfig
 import org.jetbrains.kotlin.ir.symbols.IrSymbol
 import org.jetbrains.kotlin.ir.util.DumpIrTreeVisitor
+import org.jetbrains.kotlin.ir.util.isInterface
 import org.jetbrains.kotlin.js.config.JSConfigurationKeys
 import org.jetbrains.kotlin.library.impl.buffer
 import org.jetbrains.kotlin.protobuf.CodedInputStream
@@ -74,6 +73,48 @@ private class HashCalculatorForIC {
         updateForEach(annotationContainer.annotations, ::update)
     }
 
+    fun updateSymbol(symbol: IrSymbol) {
+        update(symbol.toString())
+
+        (symbol.owner as? IrClass)?.takeIf { it.isInterface }?.let { irInterface ->
+            // Adding or removing a method or property with a default implementation to an interface
+            // should invalidate all children: we must regenerate JS code for them
+            val openDeclarationSymbols = buildList {
+                for (decl in irInterface.declarations) {
+                    if (decl is IrOverridableMember && decl.modality == Modality.OPEN) {
+                        add(decl.symbol)
+                    }
+                    if (decl is IrProperty) {
+                        decl.getter?.takeIf { it.modality == Modality.OPEN }?.symbol?.let(::add)
+                        decl.setter?.takeIf { it.modality == Modality.OPEN }?.symbol?.let(::add)
+                    }
+                }
+            }
+            updateForEach(openDeclarationSymbols, ::updateSymbol)
+        }
+
+        // symbol rendering prints very little information about type parameters
+        // TODO may be it make sense to update rendering?
+        (symbol.owner as? IrTypeParametersContainer)?.let { typeParameters ->
+            updateForEach(typeParameters.typeParameters) { typeParameter ->
+                update(typeParameter.symbol.toString())
+            }
+        }
+        (symbol.owner as? IrFunction)?.let { irFunction ->
+            updateForEach(irFunction.valueParameters) { functionParam ->
+                // symbol rendering doesn't print default params information
+                // it is important to understand if default params were added or removed
+                update(functionParam.defaultValue?.let { 1 } ?: 0)
+            }
+        }
+        (symbol.owner as? IrAnnotationContainer)?.let(::updateAnnotationContainer)
+        (symbol.owner as? IrProperty)?.let { irProperty ->
+            if (irProperty.isConst) {
+                irProperty.backingField?.initializer?.let(::update)
+            }
+        }
+    }
+
     inline fun <T> updateForEach(collection: Collection<T>, f: (T) -> Unit) {
         update(collection.size)
         collection.forEach { f(it) }
@@ -92,7 +133,7 @@ private class HashCalculatorForIC {
         }
     }
 
-    fun finalize(): ICHash {
+    fun finalizeAndGetHash(): ICHash {
         val hashBytes = md5Digest.digest()
         md5Digest.reset()
         return hashBytes.buffer.asLongBuffer().let { longBuffer ->
@@ -142,42 +183,22 @@ internal class ICHasher {
         }
 
         hashCalculator.update(config.languageVersionSettings.toString())
-        return hashCalculator.finalize()
+        return hashCalculator.finalizeAndGetHash()
     }
 
     fun calculateIrFunctionHash(function: IrFunction): ICHash {
         hashCalculator.update(function)
-        return hashCalculator.finalize()
+        return hashCalculator.finalizeAndGetHash()
     }
 
     fun calculateIrAnnotationContainerHash(container: IrAnnotationContainer): ICHash {
         hashCalculator.updateAnnotationContainer(container)
-        return hashCalculator.finalize()
+        return hashCalculator.finalizeAndGetHash()
     }
 
     fun calculateIrSymbolHash(symbol: IrSymbol): ICHash {
-        hashCalculator.update(symbol.toString())
-        // symbol rendering prints very little information about type parameters
-        // TODO may be it make sense to update rendering?
-        (symbol.owner as? IrTypeParametersContainer)?.let { typeParameters ->
-            hashCalculator.updateForEach(typeParameters.typeParameters) { typeParameter ->
-                hashCalculator.update(typeParameter.symbol.toString())
-            }
-        }
-        (symbol.owner as? IrFunction)?.let { irFunction ->
-            hashCalculator.updateForEach(irFunction.valueParameters) { functionParam ->
-                // symbol rendering doesn't print default params information
-                // it is important to understand if default params were added or removed
-                hashCalculator.update(functionParam.defaultValue?.let { 1 } ?: 0)
-            }
-        }
-        (symbol.owner as? IrAnnotationContainer)?.let(hashCalculator::updateAnnotationContainer)
-        (symbol.owner as? IrProperty)?.let { irProperty ->
-            if (irProperty.isConst) {
-                irProperty.backingField?.initializer?.let(hashCalculator::update)
-            }
-        }
-        return hashCalculator.finalize()
+        hashCalculator.updateSymbol(symbol)
+        return hashCalculator.finalizeAndGetHash()
     }
 }
 
@@ -213,4 +234,4 @@ internal fun CrossModuleReferences.crossModuleReferencesHashForIC() = HashCalcul
             update(import.moduleExporter.internalName.toString())
         }
     }
-}.finalize()
+}.finalizeAndGetHash()
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsFirInvalidationTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsFirInvalidationTestGenerated.java
index 630ca17f45e..18b30afcc48 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsFirInvalidationTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsFirInvalidationTestGenerated.java
@@ -319,6 +319,12 @@ public class JsFirInvalidationTestGenerated extends AbstractJsFirInvalidationTes
         runTest("js/js.translator/testData/incremental/invalidation/localInlineFunction/");
     }
 
+    @Test
+    @TestMetadata("localObjectsLeakThroughInterface")
+    public void testLocalObjectsLeakThroughInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/");
+    }
+
     @Test
     @TestMetadata("mainModuleInvalidation")
     public void testMainModuleInvalidation() throws Exception {
@@ -373,6 +379,12 @@ public class JsFirInvalidationTestGenerated extends AbstractJsFirInvalidationTes
         runTest("js/js.translator/testData/incremental/invalidation/privateInlineFunction1/");
     }
 
+    @Test
+    @TestMetadata("privateObjectsLeakThroughSealedInterface")
+    public void testPrivateObjectsLeakThroughSealedInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/");
+    }
+
     @Test
     @TestMetadata("removeFile")
     public void testRemoveFile() throws Exception {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrES6InvalidationTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrES6InvalidationTestGenerated.java
index d98d11c1b80..22d1c96a7f1 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrES6InvalidationTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrES6InvalidationTestGenerated.java
@@ -319,6 +319,12 @@ public class JsIrES6InvalidationTestGenerated extends AbstractJsIrES6Invalidatio
         runTest("js/js.translator/testData/incremental/invalidation/localInlineFunction/");
     }
 
+    @Test
+    @TestMetadata("localObjectsLeakThroughInterface")
+    public void testLocalObjectsLeakThroughInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/");
+    }
+
     @Test
     @TestMetadata("mainModuleInvalidation")
     public void testMainModuleInvalidation() throws Exception {
@@ -373,6 +379,12 @@ public class JsIrES6InvalidationTestGenerated extends AbstractJsIrES6Invalidatio
         runTest("js/js.translator/testData/incremental/invalidation/privateInlineFunction1/");
     }
 
+    @Test
+    @TestMetadata("privateObjectsLeakThroughSealedInterface")
+    public void testPrivateObjectsLeakThroughSealedInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/");
+    }
+
     @Test
     @TestMetadata("removeFile")
     public void testRemoveFile() throws Exception {
diff --git a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrInvalidationTestGenerated.java b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrInvalidationTestGenerated.java
index 6a1bd31e3c8..5c5d2397d8c 100644
--- a/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrInvalidationTestGenerated.java
+++ b/js/js.tests/tests-gen/org/jetbrains/kotlin/incremental/JsIrInvalidationTestGenerated.java
@@ -319,6 +319,12 @@ public class JsIrInvalidationTestGenerated extends AbstractJsIrInvalidationTest
         runTest("js/js.translator/testData/incremental/invalidation/localInlineFunction/");
     }
 
+    @Test
+    @TestMetadata("localObjectsLeakThroughInterface")
+    public void testLocalObjectsLeakThroughInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/");
+    }
+
     @Test
     @TestMetadata("mainModuleInvalidation")
     public void testMainModuleInvalidation() throws Exception {
@@ -373,6 +379,12 @@ public class JsIrInvalidationTestGenerated extends AbstractJsIrInvalidationTest
         runTest("js/js.translator/testData/incremental/invalidation/privateInlineFunction1/");
     }
 
+    @Test
+    @TestMetadata("privateObjectsLeakThroughSealedInterface")
+    public void testPrivateObjectsLeakThroughSealedInterface() throws Exception {
+        runTest("js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/");
+    }
+
     @Test
     @TestMetadata("removeFile")
     public void testRemoveFile() throws Exception {
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.0.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.0.kt
index 3766a4b55d2..fc6e0cbe739 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.0.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.0.kt
@@ -1,3 +1,3 @@
-interface Module2Interface {
+interface Module1Interface {
     public suspend fun testFunction2() = 2
 }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.1.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.1.kt
index 0e7b1c36f47..209b6f4a925 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.1.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.1.kt
@@ -1,4 +1,4 @@
-interface Module2Interface {
+interface Module1Interface {
     public suspend fun testFunction2() = 2
     public fun testFunction22() = 22
 }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.2.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.2.kt
index 6e3f9ff15d3..7d904363b73 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.2.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.2.kt
@@ -1,4 +1,4 @@
-interface Module2Interface {
+interface Module1Interface {
     public fun testFunction2() = 2
     public fun testFunction22() = 22
 }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.3.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.3.kt
index bcf0e97523e..31ae0d67713 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.3.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.3.kt
@@ -1,4 +1,4 @@
-interface Module2Interface {
+interface Module1Interface {
     public fun testFunction2() = 2
     public fun testFunction22() = 22
 
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.5.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.5.kt
index 93f491f6412..a629058d84f 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.5.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.5.kt
@@ -1,4 +1,4 @@
-interface Module2Interface {
+interface Module1Interface {
     public fun testFunction2() = 20
     public fun testFunction22() = 220
 
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.6.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.6.kt
index e5d0e579872..8d4492e6b69 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.6.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/l1.6.kt
@@ -1,2 +1,2 @@
-interface Module2Interface {
+interface Module1Interface {
 }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/module.info b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/module.info
index 3abfddc8e1d..645d764207e 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/module.info
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib1/module.info
@@ -15,8 +15,8 @@ STEP 3:
     modifications:
         U : l1.3.kt -> l1.kt
     modified ir: l1.kt
-STEP 4:
     updated exports: l1.kt
+STEP 4:
 STEP 5:
     modifications:
         U : l1.5.kt -> l1.kt
@@ -30,5 +30,5 @@ STEP 7:
     modifications:
         U : l1.0.kt -> l1.kt
     modified ir: l1.kt
-STEP 8:
     updated exports: l1.kt
+STEP 8:
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/class2.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/class2.kt
new file mode 100644
index 00000000000..271dff7e262
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/class2.kt
@@ -0,0 +1,3 @@
+class Module2Class: Module1Interface {
+    fun testFunction1() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/l2.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/l2.kt
deleted file mode 100644
index 674837960c7..00000000000
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/l2.kt
+++ /dev/null
@@ -1,3 +0,0 @@
-class Module1Class: Module2Interface {
-    fun testFunction1() = 1
-}
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/module.info b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/module.info
index 90676e5f9a9..61bceeab62e 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/module.info
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/module.info
@@ -1,25 +1,28 @@
 STEP 0:
     dependencies: lib1
-    added file: l2.kt
+    added file: class2.kt, object2.kt
 STEP 1:
     dependencies: lib1
-    updated exports: l2.kt
+    updated exports: class2.kt, object2.kt
+    updated imports: class2.kt, object2.kt
 STEP 2:
     dependencies: lib1
-    updated imports: l2.kt
+    updated imports: class2.kt, object2.kt
 STEP 3:
     dependencies: lib1
+    updated imports: class2.kt, object2.kt
 STEP 4:
     dependencies: lib1
-    updated exports: l2.kt
+    updated exports: class2.kt, object2.kt
 STEP 5:
     dependencies: lib1
 STEP 6:
     dependencies: lib1
-    updated imports: l2.kt
-    updated exports: l2.kt
+    updated imports: class2.kt, object2.kt
+    updated exports: class2.kt, object2.kt
 STEP 7:
     dependencies: lib1
+    updated imports: class2.kt, object2.kt
 STEP 8:
     dependencies: lib1
-    updated exports: l2.kt
+    updated exports: class2.kt, object2.kt
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/object2.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/object2.kt
new file mode 100644
index 00000000000..af6461642d8
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/lib2/object2.kt
@@ -0,0 +1,3 @@
+object Module2Object: Module1Interface {
+    fun testFunction1() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.0.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.0.kt
index f2124ab4831..e2a9603eadf 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.0.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.0.kt
@@ -1,8 +1,9 @@
 fun box(stepId: Int): String {
-    val obj = Module1Class()
+    val obj = Module2Class()
     when (stepId) {
         0, 1, 2, 3, 4, 5, 6, 7, 8 -> {
-            if (obj.testFunction1() != 1) return "Fail 1"
+            if (obj.testFunction1() != 1) return "Fail 1 class"
+            if (Module2Object.testFunction1() != 1) return "Fail 1 object"
         }
         else -> return "Unknown"
     }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.1.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.1.kt
index e18abc94cfc..f238101ba33 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.1.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.1.kt
@@ -1,9 +1,11 @@
 fun box(stepId: Int): String {
-    val obj = Module1Class()
+    val obj = Module2Class()
     when (stepId) {
         0, 1, 2, 3, 4, 5, 6, 7, 8 -> {
-            if (obj.testFunction1() != 1) return "Fail 1"
-            if (obj.testFunction22() != 22) return "Fail 22"
+            if (obj.testFunction1() != 1) return "Fail 1 class"
+            if (obj.testFunction22() != 22) return "Fail 22 class"
+            if (Module2Object.testFunction1() != 1) return "Fail 1 object"
+            if (Module2Object.testFunction22() != 22) return "Fail 22 object"
         }
         else -> return "Unknown"
     }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.4.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.4.kt
index f1ed003d616..e643b29b986 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.4.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.4.kt
@@ -1,15 +1,23 @@
 fun box(stepId: Int): String {
-    val obj = Module1Class()
+    val obj = Module2Class()
     when (stepId) {
         0, 1, 2, 3, 4, 6, 7, 8 -> {
-            if (obj.testFunction1() != 1) return "Fail 1"
-            if (obj.testFunction22() != 22) return "Fail 22"
-            if (obj.testField222 != 222) return "Fail 222"
+            if (obj.testFunction1() != 1) return "Fail 1 class"
+            if (obj.testFunction22() != 22) return "Fail 22 class"
+            if (obj.testField222 != 222) return "Fail 222 class"
+
+            if (Module2Object.testFunction1() != 1) return "Fail 1 object"
+            if (Module2Object.testFunction22() != 22) return "Fail 22 object"
+            if (Module2Object.testField222 != 222) return "Fail 222 object"
         }
         5 -> {
-            if (obj.testFunction1() != 1) return "Fail 1"
-            if (obj.testFunction22() != 220) return "Fail 220"
-            if (obj.testField222 != 2220) return "Fail 2220"
+            if (obj.testFunction1() != 1) return "Fail 1 class"
+            if (obj.testFunction22() != 220) return "Fail 220 class"
+            if (obj.testField222 != 2220) return "Fail 2220 class"
+
+            if (Module2Object.testFunction1() != 1) return "Fail 1 object"
+            if (Module2Object.testFunction22() != 220) return "Fail 220 object"
+            if (Module2Object.testField222 != 2220) return "Fail 2220 object"
         }
         else -> return "Unknown"
     }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.8.kt b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.8.kt
index 9f2392d026e..28cabf1cc13 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.8.kt
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/main/m.8.kt
@@ -1,13 +1,18 @@
-suspend fun testCrossReference(): Int {
-    val obj = Module1Class()
+suspend fun testCrossReferenceClass(): Int {
+    val obj = Module2Class()
     return obj.testFunction2()
 }
 
+suspend fun testCrossReferenceObject(): Int {
+    return Module2Object.testFunction2()
+}
+
 fun box(stepId: Int): String {
-    val obj = Module1Class()
+    val obj = Module2Class()
     when (stepId) {
         0, 1, 2, 3, 4, 5, 6, 7, 8 -> {
-            if (obj.testFunction1() != 1) return "Fail 1"
+            if (obj.testFunction1() != 1) return "Fail 1 class"
+            if (Module2Object.testFunction1() != 1) return "Fail 1 object"
         }
         else -> return "Unknown"
     }
diff --git a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/project.info b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/project.info
index 7f222b38181..05bcd8b3fcb 100644
--- a/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/project.info
+++ b/js/js.translator/testData/incremental/invalidation/fakeOverrideInterfaceFunctionQualifiers/project.info
@@ -8,10 +8,10 @@ STEP 2:
     dirty js: lib1, lib2
 STEP 3:
     libs: lib1, lib2, main
-    dirty js: lib1
+    dirty js: lib1, lib2
 STEP 4:
     libs: lib1, lib2, main
-    dirty js: lib1, lib2, main
+    dirty js: lib2, main
 STEP 5:
     libs: lib1, lib2, main
     dirty js: lib1
@@ -20,7 +20,7 @@ STEP 6:
     dirty js: lib1, lib2, main
 STEP 7:
     libs: lib1, lib2, main
-    dirty js: lib1
+    dirty js: lib1, lib2
 STEP 8:
     libs: lib1, lib2, main
-    dirty js: lib1, lib2, main
+    dirty js: lib2, main
diff --git a/js/js.translator/testData/incremental/invalidation/interfaceSuperUsage/lib1/module.info b/js/js.translator/testData/incremental/invalidation/interfaceSuperUsage/lib1/module.info
index 93e2a7b5b75..3aca11c33d0 100644
--- a/js/js.translator/testData/incremental/invalidation/interfaceSuperUsage/lib1/module.info
+++ b/js/js.translator/testData/incremental/invalidation/interfaceSuperUsage/lib1/module.info
@@ -19,8 +19,10 @@ STEP 4:
     modifications:
         U : Interface.4.kt -> Interface.kt
     modified ir: Interface.kt
+    updated exports: Interface.kt
+    updated imports: ClassB.kt, ClassA.kt
 STEP 5:
-    updated exports: Interface.kt, ClassB.kt
+    updated exports: ClassB.kt
 STEP 6:
     modifications:
         U : ClassB.6.kt -> ClassB.kt
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.0.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.0.kt
new file mode 100644
index 00000000000..c93967d2175
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.0.kt
@@ -0,0 +1,6 @@
+class ClassA {
+    fun leakObject(): Interface {
+        val obj = object : Interface {}
+        return obj
+    }
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.1.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.1.kt
new file mode 100644
index 00000000000..0f3ebcf3574
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/classA.1.kt
@@ -0,0 +1,8 @@
+class ClassA {
+    fun leakObject(): Interface {
+        val obj = object : Interface {
+            override fun getNumber() = 1
+        }
+        return obj
+    }
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.0.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.0.kt
new file mode 100644
index 00000000000..c9b6292efab
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.0.kt
@@ -0,0 +1,5 @@
+interface Interface {
+    val extraNumber get() = 0
+
+    fun getNumber() = 0
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.2.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.2.kt
new file mode 100644
index 00000000000..bfb4b288404
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.2.kt
@@ -0,0 +1,7 @@
+interface Interface {
+    val extraNumber get() = 1
+
+    fun getNumber() = 0
+
+    fun getOtherNumber() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.4.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.4.kt
new file mode 100644
index 00000000000..eee7fd40593
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/interface.4.kt
@@ -0,0 +1,9 @@
+interface Interface {
+    val extraNumber get() = 2
+
+    fun getNumber() = 0
+
+    fun getOtherNumber() = 1
+
+    val otherExtraNumber get() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/module.info b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/module.info
new file mode 100644
index 00000000000..3199897c0cc
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/lib1/module.info
@@ -0,0 +1,24 @@
+STEP 0:
+    modifications:
+        U : classA.0.kt -> classA.kt
+        U : interface.0.kt -> interface.kt
+    added file: classA.kt, interface.kt
+STEP 1:
+    modifications:
+        U : classA.1.kt -> classA.kt
+    modified ir: classA.kt
+STEP 2:
+    modifications:
+        U : interface.2.kt -> interface.kt
+    modified ir: interface.kt
+    updated exports: interface.kt
+    updated imports: classA.kt
+STEP 3:
+STEP 4:
+    modifications:
+        U : interface.4.kt -> interface.kt
+    modified ir: interface.kt
+    updated exports: interface.kt
+    updated imports: classA.kt
+STEP 5:
+    updated exports: interface.kt
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/m.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/m.kt
new file mode 100644
index 00000000000..4616dd6437c
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/m.kt
@@ -0,0 +1,7 @@
+fun box(stepId: Int): String {
+    val x = test()
+    if (x != stepId) {
+        return "Fail $x != $stepId"
+    }
+    return "OK"
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/module.info b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/module.info
new file mode 100644
index 00000000000..5b42b9fc0ce
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/module.info
@@ -0,0 +1,23 @@
+STEP 0:
+    dependencies: lib1
+    modifications:
+        U : test.0.kt -> test.kt
+    added file: m.kt, test.kt
+STEP 1:
+    dependencies: lib1
+STEP 2:
+    dependencies: lib1
+    updated imports: test.kt
+STEP 3:
+    dependencies: lib1
+    modifications:
+        U : test.3.kt -> test.kt
+    modified ir: test.kt
+STEP 4:
+    dependencies: lib1
+    updated imports: test.kt
+STEP 5:
+    dependencies: lib1
+    modifications:
+        U : test.5.kt -> test.kt
+    modified ir: test.kt
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.0.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.0.kt
new file mode 100644
index 00000000000..050ccf5d19c
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.0.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakObject()
+    return obj.getNumber() + obj.extraNumber
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.3.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.3.kt
new file mode 100644
index 00000000000..328dad6e085
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.3.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakObject()
+    return obj.getNumber() + obj.extraNumber + obj.getOtherNumber()
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.5.kt b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.5.kt
new file mode 100644
index 00000000000..3449676fbf8
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/main/test.5.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakObject()
+    return obj.getNumber() + obj.extraNumber + obj.getOtherNumber() + obj.otherExtraNumber
+}
diff --git a/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/project.info b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/project.info
new file mode 100644
index 00000000000..10474564688
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/localObjectsLeakThroughInterface/project.info
@@ -0,0 +1,17 @@
+MODULES: lib1, main
+
+STEP 0:
+    libs: lib1, main
+    dirty js: lib1, main
+STEP 1:
+    libs: lib1, main
+    dirty js: lib1
+STEP 2:
+    libs: lib1, main
+    dirty js: lib1, main
+STEP 3:
+    libs: lib1, main
+    dirty js: main
+STEP 4..5:
+    libs: lib1, main
+    dirty js: lib1, main
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.0.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.0.kt
new file mode 100644
index 00000000000..94094b7e9fe
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.0.kt
@@ -0,0 +1,5 @@
+class ClassA {
+    val leakedObject: SealedInterface get() = PrivateObject
+}
+
+private object PrivateObject : SealedInterface
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.1.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.1.kt
new file mode 100644
index 00000000000..144b7925b2b
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/classA.1.kt
@@ -0,0 +1,7 @@
+class ClassA {
+    val leakedObject: SealedInterface get() = PrivateObject
+}
+
+private object PrivateObject : SealedInterface {
+    override fun getNumber() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.0.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.0.kt
new file mode 100644
index 00000000000..b4f714d03e5
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.0.kt
@@ -0,0 +1,5 @@
+sealed interface SealedInterface {
+    val extraNumber get() = 0
+
+    fun getNumber() = 0
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.2.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.2.kt
new file mode 100644
index 00000000000..4b6e81a0b2c
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.2.kt
@@ -0,0 +1,7 @@
+sealed interface SealedInterface {
+    val extraNumber get() = 1
+
+    fun getNumber() = 0
+
+    fun getOtherNumber() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.4.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.4.kt
new file mode 100644
index 00000000000..3ab66c0c430
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/interface.4.kt
@@ -0,0 +1,9 @@
+sealed interface SealedInterface {
+    val extraNumber get() = 2
+
+    fun getNumber() = 0
+
+    fun getOtherNumber() = 1
+
+    val otherExtraNumber get() = 1
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/module.info b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/module.info
new file mode 100644
index 00000000000..57efbfeafdc
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/lib1/module.info
@@ -0,0 +1,24 @@
+STEP 0:
+    modifications:
+        U : classA.0.kt -> classA.kt
+        U : interface.0.kt -> interface.kt
+    added file: classA.kt, interface.kt
+STEP 1:
+    modifications:
+        U : classA.1.kt -> classA.kt
+    modified ir: classA.kt
+STEP 2:
+    modifications:
+        U : interface.2.kt -> interface.kt
+    modified ir: interface.kt
+    updated exports: interface.kt
+    updated imports: classA.kt
+STEP 3:
+STEP 4:
+    modifications:
+        U : interface.4.kt -> interface.kt
+    modified ir: interface.kt
+    updated exports: interface.kt
+    updated imports: classA.kt
+STEP 5:
+    updated exports: interface.kt
\ No newline at end of file
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/m.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/m.kt
new file mode 100644
index 00000000000..4616dd6437c
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/m.kt
@@ -0,0 +1,7 @@
+fun box(stepId: Int): String {
+    val x = test()
+    if (x != stepId) {
+        return "Fail $x != $stepId"
+    }
+    return "OK"
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/module.info b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/module.info
new file mode 100644
index 00000000000..5b42b9fc0ce
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/module.info
@@ -0,0 +1,23 @@
+STEP 0:
+    dependencies: lib1
+    modifications:
+        U : test.0.kt -> test.kt
+    added file: m.kt, test.kt
+STEP 1:
+    dependencies: lib1
+STEP 2:
+    dependencies: lib1
+    updated imports: test.kt
+STEP 3:
+    dependencies: lib1
+    modifications:
+        U : test.3.kt -> test.kt
+    modified ir: test.kt
+STEP 4:
+    dependencies: lib1
+    updated imports: test.kt
+STEP 5:
+    dependencies: lib1
+    modifications:
+        U : test.5.kt -> test.kt
+    modified ir: test.kt
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.0.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.0.kt
new file mode 100644
index 00000000000..728da51fa0d
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.0.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakedObject
+    return obj.getNumber() + obj.extraNumber
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.3.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.3.kt
new file mode 100644
index 00000000000..5e09cf360a0
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.3.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakedObject
+    return obj.getNumber() + obj.extraNumber + obj.getOtherNumber()
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.5.kt b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.5.kt
new file mode 100644
index 00000000000..9ae4bde26b6
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/main/test.5.kt
@@ -0,0 +1,5 @@
+fun test(): Int {
+    val a = ClassA()
+    val obj = a.leakedObject
+    return obj.getNumber() + obj.extraNumber + obj.getOtherNumber() + obj.otherExtraNumber
+}
diff --git a/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/project.info b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/project.info
new file mode 100644
index 00000000000..10474564688
--- /dev/null
+++ b/js/js.translator/testData/incremental/invalidation/privateObjectsLeakThroughSealedInterface/project.info
@@ -0,0 +1,17 @@
+MODULES: lib1, main
+
+STEP 0:
+    libs: lib1, main
+    dirty js: lib1, main
+STEP 1:
+    libs: lib1, main
+    dirty js: lib1
+STEP 2:
+    libs: lib1, main
+    dirty js: lib1, main
+STEP 3:
+    libs: lib1, main
+    dirty js: main
+STEP 4..5:
+    libs: lib1, main
+    dirty js: lib1, main