Replace Temporal.ZonedDateTime.timeZone getter with new API

This is the replacement of the old API with the new API, .timeZoneId and
.getTimeZone(). Semantics will be corrected in the following commit.

Normative PR: tc39/proposal-temporal#2482

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/timezone-case-insensitive.js

@@ -7,8 +7,8 @@ description: Time zone names are case insensitive
 features: [Temporal]
 ---*/
 
-const instance = new Temporal.Instant(0n); 
+const instance = new Temporal.Instant(0n);
 
 const timeZone = 'uTc';
 const result = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result.timeZone.id, 'UTC', `Time zone created from string "${timeZone}"`);
+assert.sameValue(result.timeZoneId, 'UTC', `Time zone created from string "${timeZone}"`);

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/timezone-string-datetime.js

@@ -15,30 +15,30 @@ assert.throws(RangeError, () => instance.toZonedDateTime({ timeZone: { timeZone
 
 timeZone = "2021-08-19T17:30Z";
 const result1 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result1.timeZone.id, "UTC", "date-time + Z is UTC time zone");
+assert.sameValue(result1.timeZoneId, "UTC", "date-time + Z is UTC time zone");
 const result2 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result2.timeZone.id, "UTC", "date-time + Z is UTC time zone (string in property bag)");
+assert.sameValue(result2.timeZoneId, "UTC", "date-time + Z is UTC time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00";
 const result3 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result3.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
+assert.sameValue(result3.timeZoneId, "-07:00", "date-time + offset is the offset time zone");
 const result4 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result4.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
+assert.sameValue(result4.timeZoneId, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30[UTC]";
 const result5 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result5.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone");
+assert.sameValue(result5.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone");
 const result6 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result6.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result6.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30Z[UTC]";
 const result7 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result7.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
+assert.sameValue(result7.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
 const result8 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result8.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result8.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00[UTC]";
 const result9 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result9.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
+assert.sameValue(result9.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
 const result10 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result10.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result10.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/timezone-string-leap-second.js

@@ -11,9 +11,9 @@ const instance = new Temporal.Instant(0n);
 let timeZone = "2016-12-31T23:59:60+00:00[UTC]";
 
 const result1 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result1.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone");
+assert.sameValue(result1.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone");
 const result2 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result2.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
+assert.sameValue(result2.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
 
 timeZone = "2021-08-19T17:30:45.123456789+23:59[+23:59:60]";
 assert.throws(RangeError, () => instance.toZonedDateTime({ timeZone, calendar: "iso8601" }), "leap second in time zone name not valid");

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/timezone-string-multiple-offsets.js

@@ -11,6 +11,6 @@ const instance = new Temporal.Instant(0n);
 const timeZone = "2021-08-19T17:30:45.123456789+01:46[+01:45:30.987654321]";
 
 const result1 = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-assert.sameValue(result1.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result1.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");
 const result2 = instance.toZonedDateTime({ timeZone: { timeZone }, calendar: "iso8601" });
-assert.sameValue(result2.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result2.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");

test/built-ins/Temporal/Instant/prototype/toZonedDateTime/timezone-string.js

@@ -11,5 +11,5 @@ const instance = new Temporal.Instant(0n);
 
 ["UTC", "+01:30"].forEach((timeZone) => {
   const result = instance.toZonedDateTime({ timeZone, calendar: "iso8601" });
-  assert.sameValue(result.timeZone.id, timeZone, `Time zone created from string "${timeZone}"`);
+  assert.sameValue(result.getISOFields().timeZone, timeZone, `time zone slot should store string "${timeZone}"`);
 });

test/built-ins/Temporal/Instant/prototype/toZonedDateTimeISO/timezone-case-insensitive.js

@@ -7,8 +7,8 @@ description: Time zone names are case insensitive
 features: [Temporal]
 ---*/
 
-const instance = new Temporal.Instant(0n); 
+const instance = new Temporal.Instant(0n);
 
 const timeZone = 'uTc';
 const result = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result.timeZone.id, 'UTC', `Time zone created from string "${timeZone}"`);
+assert.sameValue(result.timeZoneId, 'UTC', `Time zone created from string "${timeZone}"`);

test/built-ins/Temporal/Instant/prototype/toZonedDateTimeISO/timezone-string-datetime.js

@@ -15,30 +15,30 @@ assert.throws(RangeError, () => instance.toZonedDateTimeISO({ timeZone }), "bare
 
 timeZone = "2021-08-19T17:30Z";
 const result1 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "date-time + Z is UTC time zone");
+assert.sameValue(result1.timeZoneId, "UTC", "date-time + Z is UTC time zone");
 const result2 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "date-time + Z is UTC time zone (string in property bag)");
+assert.sameValue(result2.timeZoneId, "UTC", "date-time + Z is UTC time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00";
 const result3 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result3.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
+assert.sameValue(result3.timeZoneId, "-07:00", "date-time + offset is the offset time zone");
 const result4 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result4.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
+assert.sameValue(result4.timeZoneId, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30[UTC]";
 const result5 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result5.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone");
+assert.sameValue(result5.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone");
 const result6 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result6.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result6.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30Z[UTC]";
 const result7 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result7.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
+assert.sameValue(result7.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
 const result8 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result8.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result8.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00[UTC]";
 const result9 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result9.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
+assert.sameValue(result9.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
 const result10 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result10.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result10.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");

test/built-ins/Temporal/Instant/prototype/toZonedDateTimeISO/timezone-string-leap-second.js

@@ -11,9 +11,9 @@ const instance = new Temporal.Instant(0n);
 let timeZone = "2016-12-31T23:59:60+00:00[UTC]";
 
 const result1 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone");
+assert.sameValue(result1.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone");
 const result2 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
+assert.sameValue(result2.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
 
 timeZone = "2021-08-19T17:30:45.123456789+23:59[+23:59:60]";
 assert.throws(RangeError, () => instance.toZonedDateTimeISO(timeZone), "leap second in time zone name not valid");

test/built-ins/Temporal/Instant/prototype/toZonedDateTimeISO/timezone-string-multiple-offsets.js

@@ -11,6 +11,6 @@ const instance = new Temporal.Instant(0n);
 const timeZone = "2021-08-19T17:30:45.123456789+01:46[+01:45:30.987654321]";
 
 const result1 = instance.toZonedDateTimeISO(timeZone);
-assert.sameValue(result1.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result1.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");
 const result2 = instance.toZonedDateTimeISO({ timeZone });
-assert.sameValue(result2.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result2.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");

test/built-ins/Temporal/Instant/prototype/toZonedDateTimeISO/timezone-string.js

@@ -11,5 +11,5 @@ const instance = new Temporal.Instant(0n);
 
 ["UTC", "+01:30"].forEach((timeZone) => {
   const result = instance.toZonedDateTimeISO(timeZone);
-  assert.sameValue(result.timeZone.id, timeZone, `Time zone created from string "${timeZone}"`);
+  assert.sameValue(result.getISOFields().timeZone, timeZone, `time zone slot should store string "${timeZone}"`);
 });

test/built-ins/Temporal/Now/zonedDateTime/time-zone-undefined.js

@@ -21,11 +21,11 @@ Object.defineProperty(Temporal.TimeZone, "from", {
 const systemTimeZone = Temporal.Now.timeZoneId();
 
 const resultExplicit = Temporal.Now.zonedDateTime('iso8601', undefined);
-assert.sameValue(resultExplicit.timeZone.id, systemTimeZone);
+assert.sameValue(resultExplicit.getISOFields().timeZone, systemTimeZone, "time zone slot should store a string");
 
 assert.compareArray(actual, expected, "Temporal.TimeZone.from should not be called");
 
 const resultImplicit = Temporal.Now.zonedDateTime('iso8601');
-assert.sameValue(resultImplicit.timeZone.id, systemTimeZone);
+assert.sameValue(resultImplicit.getISOFields().timeZone, systemTimeZone, "time zone slot should store a string");
 
 assert.compareArray(actual, expected, "Temporal.TimeZone.from should not be called");

test/built-ins/Temporal/Now/zonedDateTime/timezone-case-insensitive.js

@@ -9,4 +9,4 @@ features: [Temporal]
 
 const timeZone = 'UtC';
 const result = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result.timeZone.id, 'UTC', `Time zone created from string "${timeZone}"`);
+assert.sameValue(result.timeZoneId, 'UTC', `Time zone created from string "${timeZone}"`);

test/built-ins/Temporal/Now/zonedDateTime/timezone-string-datetime.js

@@ -13,30 +13,30 @@ assert.throws(RangeError, () => Temporal.Now.zonedDateTime("iso8601", { timeZone
 
 timeZone = "2021-08-19T17:30Z";
 const result1 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "date-time + Z is UTC time zone");
+assert.sameValue(result1.timeZoneId, "UTC", "date-time + Z is UTC time zone");
 const result2 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "date-time + Z is UTC time zone (string in property bag)");
+assert.sameValue(result2.timeZoneId, "UTC", "date-time + Z is UTC time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00";
 const result3 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result3.timeZone.id, "-07:00", "date-time + offset is the offset time zone");
+assert.sameValue(result3.timeZoneId, "-07:00", "date-time + offset is the offset time zone");
 const result4 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result4.timeZone.id, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
+assert.sameValue(result4.timeZoneId, "-07:00", "date-time + offset is the offset time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30[UTC]";
 const result5 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result5.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone");
+assert.sameValue(result5.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone");
 const result6 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result6.timeZone.id, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result6.timeZoneId, "UTC", "date-time + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30Z[UTC]";
 const result7 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result7.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
+assert.sameValue(result7.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone");
 const result8 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result8.timeZone.id, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result8.timeZoneId, "UTC", "date-time + Z + IANA annotation is the IANA time zone (string in property bag)");
 
 timeZone = "2021-08-19T17:30-07:00[UTC]";
 const result9 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result9.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
+assert.sameValue(result9.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone");
 const result10 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result10.timeZone.id, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");
+assert.sameValue(result10.timeZoneId, "UTC", "date-time + offset + IANA annotation is the IANA time zone (string in property bag)");

test/built-ins/Temporal/Now/zonedDateTime/timezone-string-leap-second.js

@@ -10,9 +10,9 @@ features: [Temporal]
 let timeZone = "2016-12-31T23:59:60+00:00[UTC]";
 
 const result1 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result1.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone");
+assert.sameValue(result1.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone");
 const result2 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result2.timeZone.id, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
+assert.sameValue(result2.timeZoneId, "UTC", "leap second is a valid ISO string for TimeZone (nested property)");
 
 timeZone = "2021-08-19T17:30:45.123456789+23:59[+23:59:60]";
 assert.throws(RangeError, () => Temporal.Now.zonedDateTime("iso8601", timeZone), "leap second in time zone name not valid");

test/built-ins/Temporal/Now/zonedDateTime/timezone-string-multiple-offsets.js

@@ -10,6 +10,6 @@ features: [Temporal]
 const timeZone = "2021-08-19T17:30:45.123456789+01:46[+01:45:30.987654321]";
 
 const result1 = Temporal.Now.zonedDateTime("iso8601", timeZone);
-assert.sameValue(result1.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result1.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");
 const result2 = Temporal.Now.zonedDateTime("iso8601", { timeZone });
-assert.sameValue(result2.timeZone.id, "+01:45:30.987654321", "Time zone string determined from bracket name");
+assert.sameValue(result2.timeZoneId, "+01:45:30.987654321", "Time zone string determined from bracket name");

test/built-ins/Temporal/Now/zonedDateTime/timezone-string.js

@@ -9,5 +9,5 @@ features: [Temporal]
 
 ["UTC", "+01:30"].forEach((timeZone) => {
   const result = Temporal.Now.zonedDateTime("iso8601", timeZone);
-  assert.sameValue(result.timeZone.id, timeZone, `Time zone created from string "${timeZone}"`);
+  assert.sameValue(result.getISOFields().timeZone, timeZone, `Time zone created from string "${timeZone}"`);
 });

test/built-ins/Temporal/Now/zonedDateTimeISO/return-value.js

@@ -11,5 +11,4 @@ const zdt = Temporal.Now.zonedDateTimeISO();
 const tz = Temporal.Now.timeZoneId();
 assert(zdt instanceof Temporal.ZonedDateTime);
 assert.sameValue(zdt.getISOFields().calendar, "iso8601", "calendar slot should store a string");
-assert(zdt.timeZone instanceof Temporal.TimeZone);
-assert.sameValue(zdt.timeZone.id, tz);
+assert.sameValue(zdt.getISOFields().timeZone, tz, "time zone slot should store a string");

test/built-ins/Temporal/Now/zonedDateTimeISO/time-zone-undefined.js

@@ -21,11 +21,11 @@ Object.defineProperty(Temporal.TimeZone, "from", {
 const systemTimeZone = Temporal.Now.timeZoneId();
 
 const resultExplicit = Temporal.Now.zonedDateTimeISO(undefined);
-assert.sameValue(resultExplicit.timeZone.id, systemTimeZone);
+assert.sameValue(resultExplicit.getISOFields().timeZone, systemTimeZone, "time zone slot should store a string");
 
 assert.compareArray(actual, expected, "Temporal.TimeZone.from should not be called");
 
 const resultImplicit = Temporal.Now.zonedDateTimeISO();
-assert.sameValue(resultImplicit.timeZone.id, systemTimeZone);
+assert.sameValue(resultImplicit.getISOFields().timeZone, systemTimeZone, "time zone slot should store a string");
 
 assert.compareArray(actual, expected, "Temporal.TimeZone.from should not be called");

test/built-ins/Temporal/Now/zonedDateTimeISO/timezone-case-insensitive.js

@@ -9,4 +9,4 @@ features: [Temporal]
 
 const timeZone = 'UtC';
 const result = Temporal.Now.zonedDateTimeISO(timeZone);
-assert.sameValue(result.timeZone.id, 'UTC', `Time zone created from string "${timeZone}"`);
+assert.sameValue(result.timeZoneId, 'UTC', `Time zone created from string "${timeZone}"`);