diff --git a/packages/core/src/utilities/isClass.ts b/packages/core/src/utilities/isClass.ts
new file mode 100644
index 00000000..a35ba2e7
--- /dev/null
+++ b/packages/core/src/utilities/isClass.ts
@@ -0,0 +1,7 @@
+export default function isClass(item: any): boolean {
+  if (item.constructor?.toString().substring(0, 5) !== 'class') {
+    return false
+  }
+
+  return true
+}
diff --git a/packages/core/src/utilities/isObject.ts b/packages/core/src/utilities/isObject.ts
index 5321f363..84e8d66d 100644
--- a/packages/core/src/utilities/isObject.ts
+++ b/packages/core/src/utilities/isObject.ts
@@ -1,3 +1,5 @@
+import isClass from './isClass'
+
 export default function isObject(item: any): boolean {
   if (!item) {
     return false
@@ -11,7 +13,7 @@ export default function isObject(item: any): boolean {
     return false
   }
 
-  if (item.constructor?.toString().substring(0, 5) === 'class') {
+  if (isClass(item)) {
     return false
   }