diff --git a/src/vnodeTransformers/stubComponentsTransformer.ts b/src/vnodeTransformers/stubComponentsTransformer.ts
index 6764aac1b..d2d44e973 100644
--- a/src/vnodeTransformers/stubComponentsTransformer.ts
+++ b/src/vnodeTransformers/stubComponentsTransformer.ts
@@ -1,4 +1,4 @@
-import type { VTUVNodeTypeTransformer } from './util'
+import { isKeepAlive, isTeleport, VTUVNodeTypeTransformer } from './util'
 import {
   Transition,
   TransitionGroup,
@@ -115,7 +115,7 @@ export function createStubComponentsTransformer({
 }: CreateStubComponentsTransformerConfig): VTUVNodeTypeTransformer {
   return function componentsTransformer(type, instance) {
     // stub teleport by default via config.global.stubs
-    if ((type as any) === Teleport && 'teleport' in stubs) {
+    if (isTeleport(type) && 'teleport' in stubs) {
       if (stubs.teleport === false) return type
 
       return createStub({
@@ -126,7 +126,7 @@ export function createStubComponentsTransformer({
     }
 
     // stub keep-alive/KeepAlive by default via config.global.stubs
-    if ((type as any) === KeepAlive && ('keep-alive' in stubs || 'KeepAlive' in stubs)) {
+    if (isKeepAlive(type) && ('keep-alive' in stubs || 'KeepAlive' in stubs)) {
       if ('keep-alive' in stubs && stubs['keep-alive'] === false) return type
       if ('KeepAlive' in stubs && stubs['KeepAlive'] === false) return type
 
diff --git a/src/vnodeTransformers/util.ts b/src/vnodeTransformers/util.ts
index d9e5f98ee..c79bccd86 100644
--- a/src/vnodeTransformers/util.ts
+++ b/src/vnodeTransformers/util.ts
@@ -20,8 +20,8 @@ export type VTUVNodeTypeTransformer = (
   instance: InstanceArgsType
 ) => VNodeTransformerInputComponentType
 
-const isTeleport = (type: any): boolean => type.__isTeleport
-const isKeepAlive = (type: any): boolean => type.__isKeepAlive
+export const isTeleport = (type: any): boolean => type.__isTeleport
+export const isKeepAlive = (type: any): boolean => type.__isKeepAlive
 
 export const createVNodeTransformer = ({
   transformers