Bring polyfill in line with Intl Era Monthcode and update test262 commit

polyfill/lib/calendar.mjs

@@ -561,6 +561,16 @@ function simpleDateDiff(one, two) {
   };
 }
 
+function clampISODate(iso) {
+  if (iso.year < -271821 || (iso.year === -271821 && (iso.month < 4 || (iso.month === 4 && iso.day < 19)))) {
+    return { year: -271821, month: 4, day: 19 };
+  }
+  if (iso.year > 275760 || (iso.year === 275760 && (iso.month > 9 || (iso.month === 9 && iso.day > 13)))) {
+    return { year: 275760, month: 9, day: 13 };
+  }
+  return iso;
+}
+
 /**
  * Implementation that's common to all non-trivial non-ISO calendars
  */
@@ -877,7 +887,7 @@ const nonIsoHelperBase = {
     }
 
     // First, try to roughly guess the result
-    let isoEstimate = this.estimateIsoDate({ year, month, day });
+    let isoEstimate = clampISODate(this.estimateIsoDate({ year, month, day }));
     const calculateSameMonthResult = (diffDays) => {
       // If the estimate is in the same year & month as the target, then we can
       // calculate the result exactly and short-circuit any additional logic.
@@ -909,7 +919,7 @@ const nonIsoHelperBase = {
     let diff = simpleDateDiff(date, roundtripEstimate);
     if (diff.years !== 0 || diff.months !== 0 || diff.days !== 0) {
       const diffTotalDaysEstimate = diff.years * 365 + diff.months * 30 + diff.days;
-      isoEstimate = addDaysISO(isoEstimate, diffTotalDaysEstimate);
+      isoEstimate = clampISODate(addDaysISO(isoEstimate, diffTotalDaysEstimate));
       roundtripEstimate = this.isoToCalendarDate(isoEstimate, cache);
       diff = simpleDateDiff(date, roundtripEstimate);
       if (diff.years === 0 && diff.months === 0) {
@@ -1871,7 +1881,7 @@ const helperJapanese = ObjectAssign(
     { code: 'heisei', isoEpoch: { year: 1989, month: 1, day: 8 }, anchorEpoch: { year: 1989, month: 1, day: 8 } },
     { code: 'showa', isoEpoch: { year: 1926, month: 12, day: 25 }, anchorEpoch: { year: 1926, month: 12, day: 25 } },
     { code: 'taisho', isoEpoch: { year: 1912, month: 7, day: 30 }, anchorEpoch: { year: 1912, month: 7, day: 30 } },
-    { code: 'meiji', isoEpoch: { year: 1868, month: 9, day: 8 }, anchorEpoch: { year: 1868, month: 9, day: 8 } },
+    { code: 'meiji', isoEpoch: { year: 1868, month: 10, day: 23 }, anchorEpoch: { year: 1868, month: 10, day: 23 } },
     { code: 'ce', isoEpoch: { year: 1, month: 1, day: 1 } },
     { code: 'bce', reverseOf: 'ce' }
   ]),

polyfill/lib/intl.mjs

@@ -445,6 +445,7 @@ function monthDayAmend(originalOptions) {
     full: { month: 'long', day: 'numeric' }
   };
   const options = amend(originalOptions, {
+    era: false,
     year: false,
     hour: false,
     minute: false,

polyfill/test/expected-failures.txt

@@ -15,13 +15,10 @@ intl402/DateTimeFormat/prototype/resolvedOptions/hourCycle-default.js
 
 # Possibly faulty calculations for year 0 in Hebrew calendar in ICU4C
 # https://unicode-org.atlassian.net/browse/ICU-23007
-staging/sm/Temporal/PlainDate/from-constrain-hebrew.js
-
-# Test is incorrect, no reason why this date should not exist; seems to be
-# working around an ICU4X bug
-staging/sm/Temporal/PlainDate/from-islamic-umalqura.js
+intl402/Temporal/PlainDate/from/calc-epoch-year-hebrew.js
 
 # Faulty leap month calculations in Chinese calendar in ICU4C
+# https://unicode-org.atlassian.net/browse/ICU-13195
 intl402/Temporal/PlainDate/prototype/monthCode/chinese-calendar-dates.js
 intl402/Temporal/PlainDateTime/prototype/monthCode/chinese-calendar-dates.js
 intl402/Temporal/PlainMonthDay/prototype/monthCode/chinese-calendar-dates.js
@@ -34,3 +31,20 @@ staging/sm/Temporal/PlainMonthDay/from-chinese-leap-month-uncommon.js
 # Fails on V8, no upstream bug open yet
 intl402/DateTimeFormat/prototype/resolvedOptions/resolved-calendar-unicode-extensions-and-options.js
 intl402/DateTimeFormat/prototype/resolvedOptions/resolved-numbering-system-unicode-extensions-and-options.js
+
+# ICU4C internal error in extreme dates in chinese/dangi calendars
+intl402/Temporal/PlainDate/from/extreme-dates.js
+intl402/Temporal/PlainDateTime/from/extreme-dates.js
+intl402/Temporal/PlainYearMonth/from/extreme-dates.js
+intl402/Temporal/ZonedDateTime/from/extreme-dates.js
+
+# ICU4C 77 failures. Remove these lines when updating to a version of Node.js
+# with ICU4C 78.
+intl402/Temporal/PlainDate/from/hebrew-keviah.js
+intl402/Temporal/PlainDate/from/roundtrip-from-string.js
+intl402/Temporal/PlainDate/prototype/daysInYear/basic-hebrew.js
+intl402/Temporal/PlainDateTime/from/roundtrip-from-string.js
+intl402/Temporal/PlainDateTime/prototype/daysInYear/basic-hebrew.js
+intl402/Temporal/PlainYearMonth/prototype/daysInYear/basic-hebrew.js
+intl402/Temporal/ZonedDateTime/from/roundtrip-from-string.js
+intl402/Temporal/ZonedDateTime/prototype/daysInYear/basic-hebrew.js