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// Copyright (C) 2017 Daniel Ehrenberg. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-todatetimeoptions
description: >
Monkey-patching Object.prototype does not change the default
options for DateTimeFormat as a null prototype is used.
info: |
ToDateTimeOptions ( options, required, defaults )
1. If options is undefined, let options be null; otherwise let options be ? ToObject(options).
1. Let options be ObjectCreate(options).
---*/
let defaultYear = new Intl.DateTimeFormat("en").resolvedOptions().year;
Object.prototype.year = "2-digit";
let formatter = new Intl.DateTimeFormat("en");
assert.sameValue(formatter.resolvedOptions().year, defaultYear);
reportCompare(0, 0);