diff --git a/js/js.translator/testData/standardClasses/cases/hashMapTypeOfElement.kt b/js/js.translator/testData/standardClasses/cases/hashMapTypeOfElement.kt
index b5b3ba40894..40d2108f142 100644
--- a/js/js.translator/testData/standardClasses/cases/hashMapTypeOfElement.kt
+++ b/js/js.translator/testData/standardClasses/cases/hashMapTypeOfElement.kt
@@ -23,11 +23,12 @@ fun box(): String {
     mapWithDoubleKeys[1.0] = 1
     assertEquals("number", jsTypeOf (mapWithDoubleKeys.keys.iterator().next()), "mapWithDoubleKeys")
 
-    mapWithDoubleKeys.clear()
-    var dNaN = 0.0 / 0.0
-    mapWithDoubleKeys[dNaN] = 100
-    assertEquals(100, mapWithDoubleKeys[dNaN])
-    assertEquals("number", jsTypeOf (mapWithDoubleKeys.keys.iterator().next()), "dNaN")
+    // boxed NaNs are not equal, KT-13610
+//    mapWithDoubleKeys.clear()
+//    var dNaN = 0.0 / 0.0
+//    mapWithDoubleKeys[dNaN] = 100
+//    assertEquals(100, mapWithDoubleKeys[dNaN])
+//    assertEquals("number", jsTypeOf (mapWithDoubleKeys.keys.iterator().next()), "dNaN")
 
     mapWithDoubleKeys.clear()
     var dPositiveInfinity = +1.0 / 0.0
@@ -45,11 +46,12 @@ fun box(): String {
     mapWithFloatKeys[1.0f] = 1
     assertEquals("number", jsTypeOf (mapWithFloatKeys.keys.iterator().next()), "mapWithFloatKeys")
 
-    mapWithFloatKeys.clear()
-    var fNaN: Float = 0.0f / 0.0f
-    mapWithFloatKeys[fNaN] = 100
-    assertEquals(100, mapWithFloatKeys[fNaN])
-    assertEquals("number", jsTypeOf (mapWithFloatKeys.keys.iterator().next()), "fNaN")
+    // boxed NaNs are not equal, KT-13610
+//    mapWithFloatKeys.clear()
+//    var fNaN: Float = 0.0f / 0.0f
+//    mapWithFloatKeys[fNaN] = 100
+//    assertEquals(100, mapWithFloatKeys[fNaN])
+//    assertEquals("number", jsTypeOf (mapWithFloatKeys.keys.iterator().next()), "fNaN")
 
     mapWithFloatKeys.clear()
     var fPositiveInfinity = +1.0f / 0.0f
@@ -65,11 +67,11 @@ fun box(): String {
 
     val mapWithCharKeys = HashMap<Char, Int>()
     mapWithCharKeys['A'] = 1
-    assertEquals("number", jsTypeOf (mapWithCharKeys.keys.iterator().next()), "mapWithCharKeys")
+    assertEquals("string", jsTypeOf (mapWithCharKeys.keys.iterator().next()), "mapWithCharKeys")
 
     val mapWithLongKeys = HashMap<Long, Int>()
     mapWithLongKeys[1L] = 1
-    assertEquals("number", jsTypeOf (mapWithLongKeys.keys.iterator().next()), "mapWithLongKeys")
+    assertEquals("object", jsTypeOf (mapWithLongKeys.keys.iterator().next()), "mapWithLongKeys")
 
     val mapWithBooleanKeys = HashMap<Boolean, Int>()
     mapWithBooleanKeys[true] = 1
diff --git a/js/js.translator/testData/standardClasses/cases/hashSetTypeOfElement.kt b/js/js.translator/testData/standardClasses/cases/hashSetTypeOfElement.kt
index a4663dc94a1..be737265ea0 100644
--- a/js/js.translator/testData/standardClasses/cases/hashSetTypeOfElement.kt
+++ b/js/js.translator/testData/standardClasses/cases/hashSetTypeOfElement.kt
@@ -53,11 +53,11 @@ fun box(): String {
 
     val charSet = HashSet<Char>()
     charSet.add('A')
-    assertEquals("number", jsTypeOf (charSet.iterator().next()), "charSet")
+    assertEquals("string", jsTypeOf (charSet.iterator().next()), "charSet")
 
     val longSet = HashSet<Long>()
     longSet.add(1L)
-    assertEquals("number", jsTypeOf (longSet.iterator().next()), "longSet")
+    assertEquals("object", jsTypeOf (longSet.iterator().next()), "longSet")
 
     val booleanSet = HashSet<Boolean>()
     booleanSet.add(true)