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24def913ec
Previously, "nested" time zone property bags were unwrapped up to one
level. That is, this object:
{
timeZone: {
// ...Temporal.TimeZone methods
}
}
would not be considered to implement the TimeZone protocol, but would have
its timeZone property used instead, if it were passed to an API that
required a TimeZone protocol object.
These nested property bags are no longer supported. Discussion:
https://github.com/tc39/proposal-temporal/issues/2104#issuecomment-1409549753
Corresponding normative PR:
https://github.com/tc39/proposal-temporal/pull/2485
40 lines
979 B
JavaScript
40 lines
979 B
JavaScript
// Copyright (C) 2020 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-temporal.timezone.from
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description: An object is returned unchanged
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features: [Temporal]
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---*/
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class CustomTimeZone extends Temporal.TimeZone {}
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const objects = [
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new Temporal.TimeZone("UTC"),
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new CustomTimeZone("UTC"),
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{},
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{ getPlainDateTimeFor: null },
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{ id: "Etc/Custom" },
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];
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const thisValues = [
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Temporal.TimeZone,
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CustomTimeZone,
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{},
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null,
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undefined,
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7,
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];
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for (const thisValue of thisValues) {
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for (const object of objects) {
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const result = Temporal.TimeZone.from.call(thisValue, object);
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assert.sameValue(result, object);
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}
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const zdt = new Temporal.ZonedDateTime(0n, "UTC");
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const fromZdt = Temporal.TimeZone.from.call(thisValue, zdt);
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assert.notSameValue(fromZdt, zdt.getTimeZone(), "from() creates a new object from a string slot value");
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assert.sameValue(fromZdt.id, "UTC");
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}
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