--- /dev/null
+var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
+var dateToPrimitive = require('../internals/date-to-primitive');
+var wellKnownSymbol = require('../internals/well-known-symbol');
+
+var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
+var DatePrototype = Date.prototype;
+
+// `Date.prototype[@@toPrimitive]` method
+// https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive
+if (!(TO_PRIMITIVE in DatePrototype)) {
+ createNonEnumerableProperty(DatePrototype, TO_PRIMITIVE, dateToPrimitive);
+}