util: freeze kEnumerableProperty

nodejs · Jun 12, 2022 · ea41944 · ea41944
1 parent 440d95a
commit ea41944
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diff --git a/lib/internal/util.js b/lib/internal/util.js
@@ -504,6 +504,7 @@ const lazyDOMException = hideStackFrames((message, name) => {
 
 const kEnumerableProperty = ObjectCreate(null);
 kEnumerableProperty.enumerable = true;
+ObjectFreeze(kEnumerableProperty);
 
 const kEmptyObject = ObjectFreeze(ObjectCreate(null));
 

diff --git a/test/parallel/test-internal-util-objects.js b/test/parallel/test-internal-util-objects.js
@@ -29,6 +29,23 @@ Object.prototype.blep = 'blop';
     Object.getOwnPropertyNames(kEnumerableProperty),
     [ 'enumerable' ]
   );
+  assert.strictEqual(
+    Object.isExtensible(kEnumerableProperty),
+    false
+  );
+  assert.strictEqual(
+    Object.isSealed(kEnumerableProperty),
+    true
+  );
+  assert.strictEqual(
+    Object.isFrozen(kEnumerableProperty),
+    true
+  );
+
+  assert.throws(
+    () => kEnumerableProperty.enumerable = false,
+    TypeError
+  );
 }
 
 {