1 var createNonEnumerableProperty = require('../internals/create-non-enumerable-property');
2 var dateToPrimitive = require('../internals/date-to-primitive');
3 var wellKnownSymbol = require('../internals/well-known-symbol');
5 var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
6 var DatePrototype = Date.prototype;
8 // `Date.prototype[@@toPrimitive]` method
9 // https://tc39.github.io/ecma262/#sec-date.prototype-@@toprimitive
10 if (!(TO_PRIMITIVE in DatePrototype)) {
11 createNonEnumerableProperty(DatePrototype, TO_PRIMITIVE, dateToPrimitive);