Update polyfill and tests

polyfill/README.md

@@ -20,8 +20,8 @@ The full surface area of this proposal is expected to be covered by Test262 test
 - [x] DONE Add lightweight "Demitasse" tests in [test/canonicaltz.mjs](./test/canonicaltz.mjs) that cover this proposal's full surface area
 - [x] DONE Fix 15 existing Test262 tests that were broken by this proposal, because they assumed that time zone identifiers are always canonicalized
 - [x] DONE Open a Test262 draft PR
-- [ ] Migrate `Temporal.TimeZone.p.equals` (the only new API in this proposal) Demitasse tests to Test262
-- [ ] Migrate `Temporal.TimeZone` Demitasse tests to Test262
+- [x] Migrate `Temporal.TimeZone.p.equals` (the only new API in this proposal) Demitasse tests to Test262
+- [x] Migrate `Temporal.TimeZone` Demitasse tests to Test262
 - [ ] Migrate `Temporal.ZonedDateTime` Demitasse tests to Test262
 - [ ] Migrate `Intl.DateTimeFormat` Demitasse tests to Test262
 - [ ] Remove Demitasse tests from this repo and from CI workflows

polyfill/polyfill.diff

@@ -21,10 +21,10 @@ index 244067cb..d4b6f741 100644
      getOffsetStringFor(instant: Temporal.Instant | string): string;
      getPlainDateTimeFor(instant: Temporal.Instant | string, calendar?: CalendarLike): Temporal.PlainDateTime;
 diff --git a/polyfill/lib/ecmascript.mjs b/polyfill/lib/ecmascript.mjs
-index 6b2a318d..bf86bda9 100644
+index adbb9d2e..47803e67 100644
 --- a/polyfill/lib/ecmascript.mjs
 +++ b/polyfill/lib/ecmascript.mjs
-@@ -370,7 +370,7 @@ export function ParseTemporalTimeZone(stringIdent) {
+@@ -371,7 +371,7 @@ export function ParseTemporalTimeZone(stringIdent) {
      if (IsTimeZoneOffsetString(tzName)) return CanonicalizeTimeZoneOffsetString(tzName);
      const record = GetAvailableNamedTimeZoneIdentifier(tzName);
      if (!record) throw new RangeError(`Unrecognized time zone ${tzName}`);
@@ -33,7 +33,7 @@ index 6b2a318d..bf86bda9 100644
    }
    if (z) return 'UTC';
    // if !tzName && !z then offset must be present
-@@ -2118,7 +2118,16 @@ export function TimeZoneEquals(one, two) {
+@@ -2119,7 +2119,16 @@ export function TimeZoneEquals(one, two) {
    if (one === two) return true;
    const tz1 = ToTemporalTimeZoneIdentifier(one);
    const tz2 = ToTemporalTimeZoneIdentifier(two);
@@ -103,9 +103,9 @@ index 1a593c7f..06de9d5f 100644
 
      const formatter = new DateTimeFormat(locales, optionsCopy);
 diff --git a/polyfill/test262 b/polyfill/test262
-index 3e858ef0..be8f7e90 160000
+index 3e858ef0..7c1328f0 160000
 --- a/polyfill/test262
 +++ b/polyfill/test262
 @@ -1 +1 @@
 -Subproject commit 3e858ef02d2eda1e1e7eeff89ad7deeaf99d2766
-+Subproject commit be8f7e90217da86f3949d8ece80dc5ae3d990165
++Subproject commit 7c1328f0b47779154d5fb46117036a5ffb3e4115