LibJS: Make options mandatory in Difference{Zoned,ISO}DateTime

This is an editorial change in the Temporal spec.

See: https://github.com/tc39/proposal-temporal/commit/d4c4a16

5 files changed, 25 insertions, 28 deletions

diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
index cf067db0f6..0470fe5b2c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
@@ -1072,8 +1072,8 @@ ThrowCompletionOr<DurationRecord> add_duration(GlobalObject& global_object, doub
         return create_duration_record(global_object, 0, 0, 0, 0, result.hours, result.minutes, result.seconds, result.milliseconds, result.microseconds, result.nanoseconds);
     }
 
-    // 12. Return ? DifferenceZonedDateTime(relativeTo.[[Nanoseconds]], endNs, timeZone, calendar, largestUnit).
-    return difference_zoned_date_time(global_object, relative_to.nanoseconds(), *end_ns, time_zone, calendar, largest_unit);
+    // 12. Return ? DifferenceZonedDateTime(relativeTo.[[Nanoseconds]], endNs, timeZone, calendar, largestUnit, OrdinaryObjectCreate(null)).
+    return difference_zoned_date_time(global_object, relative_to.nanoseconds(), *end_ns, time_zone, calendar, largest_unit, *Object::create(global_object, nullptr));
 }
 
 // 7.5.23 MoveRelativeDate ( calendar, relativeTo, duration ), https://tc39.es/proposal-temporal/#sec-temporal-moverelativedate
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
index c5c22fa561..c5a7fa15a7 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
@@ -342,25 +342,22 @@ ISODateTime round_iso_date_time(i32 year, u8 month, u8 day, u8 hour, u8 minute,
     return ISODateTime { .year = balance_result.year, .month = balance_result.month, .day = balance_result.day, .hour = rounded_time.hour, .minute = rounded_time.minute, .second = rounded_time.second, .millisecond = rounded_time.millisecond, .microsecond = rounded_time.microsecond, .nanosecond = rounded_time.nanosecond };
 }
 
-// 5.5.11 DifferenceISODateTime ( y1, mon1, d1, h1, min1, s1, ms1, mus1, ns1, y2, mon2, d2, h2, min2, s2, ms2, mus2, ns2, calendar, largestUnit [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-differenceisodatetime
-ThrowCompletionOr<DurationRecord> difference_iso_date_time(GlobalObject& global_object, i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2, Object& calendar, StringView largest_unit, Object const* options)
+// 5.5.11 DifferenceISODateTime ( y1, mon1, d1, h1, min1, s1, ms1, mus1, ns1, y2, mon2, d2, h2, min2, s2, ms2, mus2, ns2, calendar, largestUnit, options ), https://tc39.es/proposal-temporal/#sec-temporal-differenceisodatetime
+ThrowCompletionOr<DurationRecord> difference_iso_date_time(GlobalObject& global_object, i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2, Object& calendar, StringView largest_unit, Object const& options)
 {
-    // 1. If options is not present, set options to undefined.
-    // 2. Assert: Type(options) is Object or Undefined.
-
-    // 3. Let timeDifference be ! DifferenceTime(h1, min1, s1, ms1, mus1, ns1, h2, min2, s2, ms2, mus2, ns2).
+    // 1. Let timeDifference be ! DifferenceTime(h1, min1, s1, ms1, mus1, ns1, h2, min2, s2, ms2, mus2, ns2).
     auto time_difference = difference_time(hour1, minute1, second1, millisecond1, microsecond1, nanosecond1, hour2, minute2, second2, millisecond2, microsecond2, nanosecond2);
 
-    // 4. Let timeSign be ! DurationSign(0, 0, 0, timeDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]]).
+    // 2. Let timeSign be ! DurationSign(0, 0, 0, timeDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]]).
     auto time_sign = duration_sign(0, 0, 0, time_difference.days, time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, time_difference.nanoseconds);
 
-    // 5. Let dateSign be ! CompareISODate(y2, mon2, d2, y1, mon1, d1).
+    // 3. Let dateSign be ! CompareISODate(y2, mon2, d2, y1, mon1, d1).
     auto date_sign = compare_iso_date(year2, month2, day2, year1, month1, day1);
 
-    // 6. Let adjustedDate be BalanceISODate(y1, mon1, d1 + timeDifference.[[Days]]).
+    // 4. Let adjustedDate be BalanceISODate(y1, mon1, d1 + timeDifference.[[Days]]).
     auto adjusted_date = balance_iso_date(year1, month1, day1 + time_difference.days);
 
-    // 7. If timeSign is -dateSign, then
+    // 5. If timeSign is -dateSign, then
     if (time_sign == -date_sign) {
         // a. Set adjustedDate to BalanceISODate(adjustedDate.[[Year]], adjustedDate.[[Month]], adjustedDate.[[Day]] - timeSign).
         adjusted_date = balance_iso_date(adjusted_date.year, adjusted_date.month, adjusted_date.day - time_sign);
@@ -369,25 +366,25 @@ ThrowCompletionOr<DurationRecord> difference_iso_date_time(GlobalObject& global_
         time_difference = TRY(balance_duration(global_object, -time_sign, time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, Crypto::SignedBigInteger { (i32)time_difference.nanoseconds }, largest_unit));
     }
 
-    // 8. Let date1 be ? CreateTemporalDate(adjustedDate.[[Year]], adjustedDate.[[Month]], adjustedDate.[[Day]], calendar).
+    // 6. Let date1 be ? CreateTemporalDate(adjustedDate.[[Year]], adjustedDate.[[Month]], adjustedDate.[[Day]], calendar).
     auto* date1 = TRY(create_temporal_date(global_object, adjusted_date.year, adjusted_date.month, adjusted_date.day, calendar));
 
-    // 9. Let date2 be ? CreateTemporalDate(y2, mon2, d2, calendar).
+    // 7. Let date2 be ? CreateTemporalDate(y2, mon2, d2, calendar).
     auto* date2 = TRY(create_temporal_date(global_object, year2, month2, day2, calendar));
 
-    // 10. Let dateLargestUnit be ! LargerOfTwoTemporalUnits("day", largestUnit).
+    // 8. Let dateLargestUnit be ! LargerOfTwoTemporalUnits("day", largestUnit).
     auto date_largest_unit = larger_of_two_temporal_units("day"sv, largest_unit);
 
-    // 11. Let untilOptions be ? MergeLargestUnitOption(options, dateLargestUnit).
-    auto* until_options = TRY(merge_largest_unit_option(global_object, options, date_largest_unit));
+    // 9. Let untilOptions be ? MergeLargestUnitOption(options, dateLargestUnit).
+    auto* until_options = TRY(merge_largest_unit_option(global_object, &options, date_largest_unit));
 
-    // 12. Let dateDifference be ? CalendarDateUntil(calendar, date1, date2, untilOptions).
+    // 10. Let dateDifference be ? CalendarDateUntil(calendar, date1, date2, untilOptions).
     auto* date_difference = TRY(calendar_date_until(global_object, calendar, date1, date2, *until_options));
 
-    // 13. Let balanceResult be ? BalanceDuration(dateDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]], largestUnit).
+    // 11. Let balanceResult be ? BalanceDuration(dateDifference.[[Days]], timeDifference.[[Hours]], timeDifference.[[Minutes]], timeDifference.[[Seconds]], timeDifference.[[Milliseconds]], timeDifference.[[Microseconds]], timeDifference.[[Nanoseconds]], largestUnit).
     auto balance_result = TRY(balance_duration(global_object, date_difference->days(), time_difference.hours, time_difference.minutes, time_difference.seconds, time_difference.milliseconds, time_difference.microseconds, Crypto::SignedBigInteger { (i32)time_difference.nanoseconds }, largest_unit));
 
-    // 14. Return ! CreateDurationRecord(dateDifference.[[Years]], dateDifference.[[Months]], dateDifference.[[Weeks]], balanceResult.[[Days]], balanceResult.[[Hours]], balanceResult.[[Minutes]], balanceResult.[[Seconds]], balanceResult.[[Milliseconds]], balanceResult.[[Microseconds]], balanceResult.[[Nanoseconds]]).
+    // 12. Return ! CreateDurationRecord(dateDifference.[[Years]], dateDifference.[[Months]], dateDifference.[[Weeks]], balanceResult.[[Days]], balanceResult.[[Hours]], balanceResult.[[Minutes]], balanceResult.[[Seconds]], balanceResult.[[Milliseconds]], balanceResult.[[Microseconds]], balanceResult.[[Nanoseconds]]).
     return create_duration_record(date_difference->years(), date_difference->months(), date_difference->weeks(), balance_result.days, balance_result.hours, balance_result.minutes, balance_result.seconds, balance_result.milliseconds, balance_result.microseconds, balance_result.nanoseconds);
 }
 
@@ -442,7 +439,7 @@ ThrowCompletionOr<Duration*> difference_temporal_plain_date_time(GlobalObject& g
     auto rounding_increment = TRY(to_temporal_rounding_increment(global_object, *options, Optional<double>(maximum), false));
 
     // 14. Let diff be ? DifferenceISODateTime(dateTime.[[ISOYear]], dateTime.[[ISOMonth]], dateTime.[[ISODay]], dateTime.[[ISOHour]], dateTime.[[ISOMinute]], dateTime.[[ISOSecond]], dateTime.[[ISOMillisecond]], dateTime.[[ISOMicrosecond]], dateTime.[[ISONanosecond]], other.[[ISOYear]], other.[[ISOMonth]], other.[[ISODay]], other.[[ISOHour]], other.[[ISOMinute]], other.[[ISOSecond]], other.[[ISOMillisecond]], other.[[ISOMicrosecond]], other.[[ISONanosecond]], dateTime.[[Calendar]], largestUnit, options).
-    auto diff = TRY(difference_iso_date_time(global_object, date_time.iso_year(), date_time.iso_month(), date_time.iso_day(), date_time.iso_hour(), date_time.iso_minute(), date_time.iso_second(), date_time.iso_millisecond(), date_time.iso_microsecond(), date_time.iso_nanosecond(), other->iso_year(), other->iso_month(), other->iso_day(), other->iso_hour(), other->iso_minute(), other->iso_second(), other->iso_millisecond(), other->iso_microsecond(), other->iso_nanosecond(), date_time.calendar(), *largest_unit, options));
+    auto diff = TRY(difference_iso_date_time(global_object, date_time.iso_year(), date_time.iso_month(), date_time.iso_day(), date_time.iso_hour(), date_time.iso_minute(), date_time.iso_second(), date_time.iso_millisecond(), date_time.iso_microsecond(), date_time.iso_nanosecond(), other->iso_year(), other->iso_month(), other->iso_day(), other->iso_hour(), other->iso_minute(), other->iso_second(), other->iso_millisecond(), other->iso_microsecond(), other->iso_nanosecond(), date_time.calendar(), *largest_unit, *options));
 
     // 15. Let relativeTo be ! CreateTemporalDate(dateTime.[[ISOYear]], dateTime.[[ISOMonth]], dateTime.[[ISODay]], dateTime.[[Calendar]]).
     auto* relative_to = MUST(create_temporal_date(global_object, date_time.iso_year(), date_time.iso_month(), date_time.iso_day(), date_time.calendar()));
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.h b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.h
index e0362ca902..8d2e74a454 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.h
@@ -73,7 +73,7 @@ ThrowCompletionOr<String> temporal_date_time_to_string(GlobalObject&, i32 iso_ye
 i8 compare_iso_date_time(i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2);
 ThrowCompletionOr<TemporalPlainDateTime> add_date_time(GlobalObject&, i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, Object& calendar, double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, Object* options);
 ISODateTime round_iso_date_time(i32 year, u8 month, u8 day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, u64 increment, StringView unit, StringView rounding_mode, Optional<double> day_length = {});
-ThrowCompletionOr<DurationRecord> difference_iso_date_time(GlobalObject&, i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2, Object& calendar, StringView largest_unit, Object const* options = nullptr);
+ThrowCompletionOr<DurationRecord> difference_iso_date_time(GlobalObject&, i32 year1, u8 month1, u8 day1, u8 hour1, u8 minute1, u8 second1, u16 millisecond1, u16 microsecond1, u16 nanosecond1, i32 year2, u8 month2, u8 day2, u8 hour2, u8 minute2, u8 second2, u16 millisecond2, u16 microsecond2, u16 nanosecond2, Object& calendar, StringView largest_unit, Object const& options);
 ThrowCompletionOr<Duration*> difference_temporal_plain_date_time(GlobalObject&, DifferenceOperation, PlainDateTime&, Value other, Value options);
 ThrowCompletionOr<PlainDateTime*> add_duration_to_or_subtract_duration_from_plain_date_time(GlobalObject&, ArithmeticOperation, PlainDateTime&, Value temporal_duration_like, Value options_value);
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
index f595eb6a0b..17f95155a7 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
@@ -392,8 +392,8 @@ ThrowCompletionOr<BigInt*> add_zoned_date_time(GlobalObject& global_object, BigI
     return MUST(add_instant(global_object, intermediate_instant->nanoseconds(), hours, minutes, seconds, milliseconds, microseconds, nanoseconds));
 }
 
-// 6.5.6 DifferenceZonedDateTime ( ns1, ns2, timeZone, calendar, largestUnit [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal-differencezoneddatetime
-ThrowCompletionOr<DurationRecord> difference_zoned_date_time(GlobalObject& global_object, BigInt const& nanoseconds1, BigInt const& nanoseconds2, Object& time_zone, Object& calendar, StringView largest_unit, Object const* options)
+// 6.5.6 DifferenceZonedDateTime ( ns1, ns2, timeZone, calendar, largestUnit, options ), https://tc39.es/proposal-temporal/#sec-temporal-differencezoneddatetime
+ThrowCompletionOr<DurationRecord> difference_zoned_date_time(GlobalObject& global_object, BigInt const& nanoseconds1, BigInt const& nanoseconds2, Object& time_zone, Object& calendar, StringView largest_unit, Object const& options)
 {
     // 1. If options is not present, set options to undefined.
     // 2. Assert: Type(options) is Object or Undefined.
@@ -485,8 +485,8 @@ ThrowCompletionOr<NanosecondsToDaysResult> nanoseconds_to_days(GlobalObject& glo
     // 10. Let endDateTime be ? BuiltinTimeZoneGetPlainDateTimeFor(relativeTo.[[TimeZone]], endInstant, relativeTo.[[Calendar]]).
     auto* end_date_time = TRY(builtin_time_zone_get_plain_date_time_for(global_object, &relative_to.time_zone(), *end_instant, relative_to.calendar()));
 
-    // 11. Let dateDifference be ? DifferenceISODateTime(startDateTime.[[ISOYear]], startDateTime.[[ISOMonth]], startDateTime.[[ISODay]], startDateTime.[[ISOHour]], startDateTime.[[ISOMinute]], startDateTime.[[ISOSecond]], startDateTime.[[ISOMillisecond]], startDateTime.[[ISOMicrosecond]], startDateTime.[[ISONanosecond]], endDateTime.[[ISOYear]], endDateTime.[[ISOMonth]], endDateTime.[[ISODay]], endDateTime.[[ISOHour]], endDateTime.[[ISOMinute]], endDateTime.[[ISOSecond]], endDateTime.[[ISOMillisecond]], endDateTime.[[ISOMicrosecond]], endDateTime.[[ISONanosecond]], relativeTo.[[Calendar]], "day").
-    auto date_difference = TRY(difference_iso_date_time(global_object, start_date_time->iso_year(), start_date_time->iso_month(), start_date_time->iso_day(), start_date_time->iso_hour(), start_date_time->iso_minute(), start_date_time->iso_second(), start_date_time->iso_millisecond(), start_date_time->iso_microsecond(), start_date_time->iso_nanosecond(), end_date_time->iso_year(), end_date_time->iso_month(), end_date_time->iso_day(), end_date_time->iso_hour(), end_date_time->iso_minute(), end_date_time->iso_second(), end_date_time->iso_millisecond(), end_date_time->iso_microsecond(), end_date_time->iso_nanosecond(), relative_to.calendar(), "day"sv));
+    // 11. Let dateDifference be ? DifferenceISODateTime(startDateTime.[[ISOYear]], startDateTime.[[ISOMonth]], startDateTime.[[ISODay]], startDateTime.[[ISOHour]], startDateTime.[[ISOMinute]], startDateTime.[[ISOSecond]], startDateTime.[[ISOMillisecond]], startDateTime.[[ISOMicrosecond]], startDateTime.[[ISONanosecond]], endDateTime.[[ISOYear]], endDateTime.[[ISOMonth]], endDateTime.[[ISODay]], endDateTime.[[ISOHour]], endDateTime.[[ISOMinute]], endDateTime.[[ISOSecond]], endDateTime.[[ISOMillisecond]], endDateTime.[[ISOMicrosecond]], endDateTime.[[ISONanosecond]], relativeTo.[[Calendar]], "day", OrdinaryObjectCreate(null)).
+    auto date_difference = TRY(difference_iso_date_time(global_object, start_date_time->iso_year(), start_date_time->iso_month(), start_date_time->iso_day(), start_date_time->iso_hour(), start_date_time->iso_minute(), start_date_time->iso_second(), start_date_time->iso_millisecond(), start_date_time->iso_microsecond(), start_date_time->iso_nanosecond(), end_date_time->iso_year(), end_date_time->iso_month(), end_date_time->iso_day(), end_date_time->iso_hour(), end_date_time->iso_minute(), end_date_time->iso_second(), end_date_time->iso_millisecond(), end_date_time->iso_microsecond(), end_date_time->iso_nanosecond(), relative_to.calendar(), "day"sv, *Object::create(global_object, nullptr)));
 
     // 12. Let days be dateDifference.[[Days]].
     auto days = date_difference.days;
@@ -616,7 +616,7 @@ ThrowCompletionOr<Duration*> difference_temporal_zoned_date_time(GlobalObject& g
     auto* until_options = TRY(merge_largest_unit_option(global_object, options, *largest_unit));
 
     // 17. Let difference be ? DifferenceZonedDateTime(zonedDateTime.[[Nanoseconds]], other.[[Nanoseconds]], zonedDateTime.[[TimeZone]], zonedDateTime.[[Calendar]], largestUnit, untilOptions).
-    auto difference = TRY(difference_zoned_date_time(global_object, zoned_date_time.nanoseconds(), other->nanoseconds(), zoned_date_time.time_zone(), zoned_date_time.calendar(), *largest_unit, until_options));
+    auto difference = TRY(difference_zoned_date_time(global_object, zoned_date_time.nanoseconds(), other->nanoseconds(), zoned_date_time.time_zone(), zoned_date_time.calendar(), *largest_unit, *until_options));
 
     // 18. Let roundResult be (? RoundDuration(difference.[[Years]], difference.[[Months]], difference.[[Weeks]], difference.[[Days]], difference.[[Hours]], difference.[[Minutes]], difference.[[Seconds]], difference.[[Milliseconds]], difference.[[Microseconds]], difference.[[Nanoseconds]], roundingIncrement, smallestUnit, roundingMode, zonedDateTime)).[[DurationRecord]].
     auto round_result = TRY(round_duration(global_object, difference.years, difference.months, difference.weeks, difference.days, difference.hours, difference.minutes, difference.seconds, difference.milliseconds, difference.microseconds, difference.nanoseconds, rounding_increment, *smallest_unit, rounding_mode, &zoned_date_time)).duration_record;
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.h b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.h
index 978691f4aa..5e421b25db 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.h
@@ -55,7 +55,7 @@ ThrowCompletionOr<ZonedDateTime*> to_temporal_zoned_date_time(GlobalObject&, Val
 ThrowCompletionOr<ZonedDateTime*> create_temporal_zoned_date_time(GlobalObject&, BigInt const& epoch_nanoseconds, Object& time_zone, Object& calendar, FunctionObject const* new_target = nullptr);
 ThrowCompletionOr<String> temporal_zoned_date_time_to_string(GlobalObject&, ZonedDateTime& zoned_date_time, Variant<StringView, u8> const& precision, StringView show_calendar, StringView show_time_zone, StringView show_offset, Optional<u64> increment = {}, Optional<StringView> unit = {}, Optional<StringView> rounding_mode = {});
 ThrowCompletionOr<BigInt*> add_zoned_date_time(GlobalObject&, BigInt const& epoch_nanoseconds, Value time_zone, Object& calendar, double years, double months, double weeks, double days, double hours, double minutes, double seconds, double milliseconds, double microseconds, double nanoseconds, Object* options = nullptr);
-ThrowCompletionOr<DurationRecord> difference_zoned_date_time(GlobalObject&, BigInt const& nanoseconds1, BigInt const& nanoseconds2, Object& time_zone, Object& calendar, StringView largest_unit, Object const* options = nullptr);
+ThrowCompletionOr<DurationRecord> difference_zoned_date_time(GlobalObject&, BigInt const& nanoseconds1, BigInt const& nanoseconds2, Object& time_zone, Object& calendar, StringView largest_unit, Object const& options);
 ThrowCompletionOr<NanosecondsToDaysResult> nanoseconds_to_days(GlobalObject&, Crypto::SignedBigInteger nanoseconds, Value relative_to);
 ThrowCompletionOr<Duration*> difference_temporal_zoned_date_time(GlobalObject&, DifferenceOperation, ZonedDateTime&, Value other, Value options);
 ThrowCompletionOr<ZonedDateTime*> add_duration_to_or_subtract_duration_from_zoned_date_time(GlobalObject&, ArithmeticOperation, ZonedDateTime&, Value temporal_duration_like, Value options_value);