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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.plainmonthday.prototype.tolocalestring
description: Verify that undefined options are handled correctly.
features: [Temporal]
---*/
const defaultFormatter = new Intl.DateTimeFormat('en', Object.create(null));
const { calendar } = defaultFormatter.resolvedOptions();
const monthday = new Temporal.PlainMonthDay(5, 2, calendar);
const expected = defaultFormatter.format(monthday);
const actualExplicit = monthday.toLocaleString('en', undefined);
assert.sameValue(actualExplicit, expected, "default locale is determined by Intl.DateTimeFormat");
const actualImplicit = monthday.toLocaleString('en');
assert.sameValue(actualImplicit, expected, "default locale is determined by Intl.DateTimeFormat");
reportCompare(0, 0);
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