1 var hasOwn = require('../internals/has-own-property');
2 var redefine = require('../internals/redefine');
3 var dateToPrimitive = require('../internals/date-to-primitive');
4 var wellKnownSymbol = require('../internals/well-known-symbol');
6 var TO_PRIMITIVE = wellKnownSymbol('toPrimitive');
7 var DatePrototype = Date.prototype;
9 // `Date.prototype[@@toPrimitive]` method
10 // https://tc39.es/ecma262/#sec-date.prototype-@@toprimitive
11 if (!hasOwn(DatePrototype, TO_PRIMITIVE)) {
12 redefine(DatePrototype, TO_PRIMITIVE, dateToPrimitive);