lib: predeclare Event.isTrusted prop descriptor

It improves Event creation performance.
nodejs · Feb 6, 2023 · 7e0185e · 7e0185e
1 parent 1e9ca45
commit 7e0185e
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/lib/internal/event_target.js b/lib/internal/event_target.js
@@ -78,6 +78,13 @@ const isTrusted = ObjectGetOwnPropertyDescriptor({
   }
 }, 'isTrusted').get;
 
+const descriptor = {
+  __proto__: null,
+  get: isTrusted,
+  enumerable: true,
+  configurable: false
+};
+
 function isEvent(value) {
   return typeof value?.[kType] === 'string';
 }
@@ -113,12 +120,7 @@ class Event {
     }
 
     // isTrusted is special (LegacyUnforgeable)
-    ObjectDefineProperty(this, 'isTrusted', {
-      __proto__: null,
-      get: isTrusted,
-      enumerable: true,
-      configurable: false
-    });
+    ObjectDefineProperty(this, 'isTrusted', descriptor);
     this[kTarget] = null;
     this[kIsBeingDispatched] = false;
   }