initial commit. phase 1 complete

2026-05-05 20:45:19 +02:00
parent d9c68313a0
commit 89e058ffac
20631 changed files with 3224610 additions and 43 deletions
@@ -0,0 +1,18 @@
+'use strict';
+
+var GetIntrinsic = require('get-intrinsic');
+
+var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true);
+var $isExtensible = GetIntrinsic('%Object.isExtensible%', true);
+
+var isPrimitive = require('../helpers/isPrimitive');
+
+// https://262.ecma-international.org/6.0/#sec-isextensible-o
+
+module.exports = $preventExtensions
+	? function IsExtensible(obj) {
+		return !isPrimitive(obj) && $isExtensible(obj);
+	}
+	: function IsExtensible(obj) {
+		return !isPrimitive(obj);
+	};