Remove ISO string -> calendar conversion

tc39 · Jan 19, 2023 · e87cca2 · e87cca2
1 parent 357c39b
commit e87cca2
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Showing 2 changed files with 2 additions and 15 deletions.
diff --git a/polyfill/lib/ecmascript.mjs b/polyfill/lib/ecmascript.mjs
@@ -1808,20 +1808,8 @@ export const ES = ObjectAssign({}, ES2022, {
  return calendarLike;
  }
  const identifier = ES.ToString(calendarLike);
- if (ES.IsBuiltinCalendar(identifier)) return ES.ASCIILowercase(identifier);
- let calendar;
- try {
- ({ calendar } = ES.ParseISODateTime(identifier));
- } catch {
- try {
- ({ calendar } = ES.ParseTemporalYearMonthString(identifier));
- } catch {
- ({ calendar } = ES.ParseTemporalMonthDayString(identifier));
- }
- }
- if (!calendar) calendar = 'iso8601';
- if (!ES.IsBuiltinCalendar(calendar)) throw new RangeError(`invalid calendar identifier ${calendar}`);
- return ES.ASCIILowercase(calendar);
+ if (!ES.IsBuiltinCalendar(identifier)) throw new RangeError(`invalid calendar identifier ${identifier}`);
+ return ES.ASCIILowercase(identifier);
  },
  GetTemporalCalendarSlotValueWithISODefault: (item) => {
  if (HasSlot(item, CALENDAR)) return GetSlot(item, CALENDAR);

diff --git a/spec/calendar.html b/spec/calendar.html
@@ -590,7 +590,6 @@ <h1>
  1. If _temporalCalendarLike_ has an [[InitializedTemporalTime]] or [[InitializedTemporalTimeZone]] internal slot, throw a *RangeError* exception.
  1. Return _temporalCalendarLike_.
  1. Let _identifier_ be ? ToString(_temporalCalendarLike_).
- 1. Set _identifier_ to ? ParseTemporalCalendarString(_identifier_).
  1. If IsBuiltinCalendar(_identifier_) is *false*, throw a *RangeError* exception.
  1. Return the ASCII-lowercase of _identifier_.
  </emu-alg>