From 0153f5d92a6b78dfb699e02f87ea82af5044f10c Mon Sep 17 00:00:00 2001
From: Artem Kobzar <artem.kobzar@jetbrains.com>
Date: Mon, 21 Mar 2022 18:53:04 +0000
Subject: [PATCH] chore: set isComplete flag also for interfaces that do not
 contain constructor fields.

---
 libraries/stdlib/js-ir/runtime/typeCheckUtils.kt | 13 +++++--------
 1 file changed, 5 insertions(+), 8 deletions(-)

diff --git a/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt b/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
index fc572111ef3..c15e4aaa23d 100644
--- a/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
+++ b/libraries/stdlib/js-ir/runtime/typeCheckUtils.kt
@@ -153,15 +153,12 @@ private fun completeInterfaceCache(ctor: Ctor): IsImplementsCache? {
         }
     }
 
-    val constructor = fastGetPrototype(ctor)?.constructor ?: return null
-    val parentInterfacesCache = completeInterfaceCache(constructor) ?: return interfacesCache
+    val parentInterfacesCache = fastGetPrototype(ctor)?.constructor?.let(::completeInterfaceCache)
 
-    if (interfacesCache == null) return parentInterfacesCache
-
-    interfacesCache.extendCacheWith(parentInterfacesCache)
-    interfacesCache.isComplete = true
-
-    return interfacesCache
+    return interfacesCache?.apply {
+        extendCacheWith(parentInterfacesCache)
+        isComplete = true
+    } ?: parentInterfacesCache
 }
 
 // Old JS Backend