-var nativeIsFrozen = Object.isFrozen;
-var FAILS_ON_PRIMITIVES = fails(function () { nativeIsFrozen(1); });
+// eslint-disable-next-line es/no-object-isfrozen -- safe
+var $isFrozen = Object.isFrozen;
+var FAILS_ON_PRIMITIVES = fails(function () { $isFrozen(1); });