diff --git a/batchoper.js b/batchoper.js
index e24ca00..22476f0 100644
--- a/batchoper.js
+++ b/batchoper.js
@@ -515,7 +515,7 @@ function fnOf(value) {
  */
 function classOf(value) {
     value = Object(value);
-    return new Proxy(null, {
+    return new Proxy({}, {
         construct() {
             return value;
         }
diff --git a/batchoper.mjs b/batchoper.mjs
index 3868e94..4161041 100644
--- a/batchoper.mjs
+++ b/batchoper.mjs
@@ -511,7 +511,7 @@ function fnOf(value) {
  */
 function classOf(value) {
     value = Object(value);
-    return new Proxy(null, {
+    return new Proxy({}, {
         construct() {
             return value;
         }
diff --git a/dist/batchoper.js b/dist/batchoper.js
index a631f20..c67cd77 100644
--- a/dist/batchoper.js
+++ b/dist/batchoper.js
@@ -517,7 +517,7 @@
      */
     function classOf(value) {
         value = Object(value);
-        return new Proxy(null, {
+        return new Proxy({}, {
             construct() {
                 return value;
             }
diff --git a/dist/batchoper.min.js b/dist/batchoper.min.js
index 6e61ca8..a51bd64 100644
--- a/dist/batchoper.min.js
+++ b/dist/batchoper.min.js
@@ -1 +1 @@
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