diff --git a/package-lock.json b/package-lock.json
index 8f0197a2..20fb6428 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -24,7 +24,7 @@
         "ajv": "^8.12.0",
         "codemirror-wrapped-line-indent": "^1.0.0",
         "diff-sequences": "^29.6.3",
-        "immutable-json-patch": "6.0.0",
+        "immutable-json-patch": "6.0.1",
         "jmespath": "^0.16.0",
         "json-source-map": "^0.6.1",
         "jsonrepair": "^3.5.1",
@@ -81,7 +81,7 @@
         "svelte-check": "3.6.3",
         "svelte-preprocess": "5.1.3",
         "typescript": "5.3.3",
-        "vite": "5.0.11",
+        "vite": "5.0.12",
         "vitest": "1.2.1"
       }
     },
@@ -9277,9 +9277,9 @@
       "integrity": "sha512-fsXeu4J4i6WNWSikpI88v/PcVflZz+6kMhUfIwc5SY+poQRPnaf5V7qds6SUyUN3cVxEzuCab7QIoLOQ+DQ1wA=="
     },
     "node_modules/immutable-json-patch": {
-      "version": "6.0.0",
-      "resolved": "https://registry.npmjs.org/immutable-json-patch/-/immutable-json-patch-6.0.0.tgz",
-      "integrity": "sha512-kBI1s6OAoWI0yRfjPr+zTAMqBJRPZeyfkG3CAHhM/S5RYO+EXoaiVmEpYYMvdiAS8GoEJbuKvwcfy38TrRlcuQ=="
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/immutable-json-patch/-/immutable-json-patch-6.0.1.tgz",
+      "integrity": "sha512-BHL/cXMjwFZlTOffiWNdY8ZTvNyYLrutCnWxrcKPHr5FqpAb6vsO6WWSPnVSys3+DruFN6lhHJJPHi8uELQL5g=="
     },
     "node_modules/import-fresh": {
       "version": "3.3.0",
@@ -13837,9 +13837,9 @@
       }
     },
     "node_modules/vite": {
-      "version": "5.0.11",
-      "resolved": "https://registry.npmjs.org/vite/-/vite-5.0.11.tgz",
-      "integrity": "sha512-XBMnDjZcNAw/G1gEiskiM1v6yzM4GE5aMGvhWTlHAYYhxb7S3/V1s3m2LDHa8Vh6yIWYYB0iJwsEaS523c4oYA==",
+      "version": "5.0.12",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-5.0.12.tgz",
+      "integrity": "sha512-4hsnEkG3q0N4Tzf1+t6NdN9dg/L3BM+q8SWgbSPnJvrgH2kgdyzfVJwbR1ic69/4uMJJ/3dqDZZE5/WwqW8U1w==",
       "dev": true,
       "dependencies": {
         "esbuild": "^0.19.3",
diff --git a/package.json b/package.json
index 21d5e827..3920c240 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     "ajv": "^8.12.0",
     "codemirror-wrapped-line-indent": "^1.0.0",
     "diff-sequences": "^29.6.3",
-    "immutable-json-patch": "6.0.0",
+    "immutable-json-patch": "6.0.1",
     "jmespath": "^0.16.0",
     "json-source-map": "^0.6.1",
     "jsonrepair": "^3.5.1",
@@ -147,7 +147,7 @@
     "svelte-check": "3.6.3",
     "svelte-preprocess": "5.1.3",
     "typescript": "5.3.3",
-    "vite": "5.0.11",
+    "vite": "5.0.12",
     "vitest": "1.2.1"
   }
 }
diff --git a/src/lib/utils/typeUtils.ts b/src/lib/utils/typeUtils.ts
index 6ab74aa8..5de7d061 100644
--- a/src/lib/utils/typeUtils.ts
+++ b/src/lib/utils/typeUtils.ts
@@ -9,7 +9,11 @@ import type { JSONParser } from '../types.js'
 export function isObject(value: unknown): value is Record<string, unknown> {
   // note that we check constructor.name, not constructor === Object,
   // so we can use objects created in a different JS realm like an iframe.
-  return typeof value === 'object' && value !== null && value.constructor.name === 'Object'
+  return (
+    typeof value === 'object' &&
+    value !== null &&
+    (value.constructor === undefined || value.constructor.name === 'Object')
+  )
 }
 
 /**
@@ -22,7 +26,9 @@ export function isObjectOrArray(value: unknown): value is Object | Array<unknown
   return (
     typeof value === 'object' &&
     value !== null &&
-    (value.constructor.name === 'Object' || value.constructor.name === 'Array')
+    (value.constructor === undefined ||
+      value.constructor.name === 'Object' ||
+      value.constructor.name === 'Array')
   )
 }