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Implement non-ISO calendar support for Temporal (Chinese, Dangi, Hebrew, Persian) #2342

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Merged
lahma merged 6 commits into from
Mar 21, 2026
Merged

Implement non-ISO calendar support for Temporal (Chinese, Dangi, Hebrew, Persian) #2342

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f728377
Implement non-ISO calendar support for Temporal (166 test262 tests)
lahma Mar 21, 2026
0ddb83f
Remove test262 exclusions for numbering-systems and fix display month…
lahma Mar 21, 2026
b0a74bc
Add algorithmic Hebrew leap year detection for out-of-range years
lahma Mar 21, 2026
b34a314
Fix PlainMonthDay with() for non-ISO calendars and remove more exclus…
lahma Mar 21, 2026
8e06124
Skip month/monthCode consistency check for non-ISO calendars
lahma Mar 21, 2026
a4a2c57
Fix relativeTo helpers for non-ISO calendar month/monthCode resolution
lahma Mar 21, 2026
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160 changes: 32 additions & 128 deletions Jint.Tests.Test262/Test262Harness.settings.json
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Original file line number Diff line number Diff line change
Expand Up @@ -110,105 +110,29 @@
// Requires Spanish unit patterns (ICU4N doesn't include unit data, only core locale data)
"intl402/DurationFormat/prototype/format/mixed-non-numeric-styles-es.js",

// NumberFormat - locale-specific formatting and formatRange
// NumberFormat - string arguments need mathematical value precision (not IEEE 754 double)
"intl402/NumberFormat/prototype/format/format-significant-digits.js",
"intl402/NumberFormat/prototype/format/numbering-systems.js",
"intl402/NumberFormat/prototype/format/useGrouping-extended-en-IN.js",
"intl402/NumberFormat/prototype/format/value-decimal-string.js",
// formatRange requires locale-specific CLDR range patterns and part collapsing

// Locale fallback chains - zh-CN should match zh-Hans-CN in supportedLocalesOf
"intl402/fallback-locales-are-supported.js",
"intl402/supportedLocalesOf-consistent-with-resolvedOptions.js",
// NumberFormat - Indian lakh/crore grouping and compact patterns
"intl402/NumberFormat/prototype/format/useGrouping-extended-en-IN.js",
// formatRange - sign collapsing and string precision
"intl402/NumberFormat/prototype/formatRange/en-US.js",
"intl402/NumberFormat/prototype/formatRange/pt-PT.js",
"intl402/NumberFormat/prototype/formatRangeToParts/en-US.js",
// Unit formatting formatToParts not yet implemented
// Unit formatting formatToParts - locale-specific unit patterns
"intl402/NumberFormat/prototype/formatToParts/unit-de-DE.js",
"intl402/NumberFormat/prototype/formatToParts/unit-ja-JP.js",
"intl402/NumberFormat/prototype/formatToParts/unit-ko-KR.js",
"intl402/NumberFormat/prototype/formatToParts/unit-zh-TW.js",

// PluralRules - notation requires compact support
// PluralRules - compact notation affects plural category
"intl402/PluralRules/prototype/select/notation.js",

// Misc intl402 tests requiring full locale support
"intl402/fallback-locales-are-supported.js",
"intl402/supportedLocalesOf-consistent-with-resolvedOptions.js",

// === INTL402 TEMPORAL EXCLUSIONS ===
// Non-ISO calendar arithmetic not yet implemented (Chinese/Dangi lunisolar, Hebrew, Persian, etc.)
// These require CalendarDateAdd, CalendarDateUntil, monthCode, monthsInYear, inLeapYear
// for non-Gregorian-based calendars.

// Chinese calendar - lunisolar calendar arithmetic
"intl402/Temporal/PlainDate/prototype/inLeapYear/chinese-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/monthsInYear/chinese-calendar-leap-days.js",
"intl402/Temporal/PlainDate/prototype/since/chinese-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/subtract/chinese-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/until/chinese-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/with/chinese-calendar-leap-dates.js",
"intl402/Temporal/PlainDateTime/prototype/inLeapYear/chinese-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/monthsInYear/chinese-calendar-leap-days.js",
"intl402/Temporal/PlainDateTime/prototype/since/chinese-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/until/chinese-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/with/chinese-calendar-leap-dates.js",
"intl402/Temporal/PlainMonthDay/from/chinese-calendar-dates.js",
"intl402/Temporal/PlainMonthDay/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/from/reference-day-chinese.js",
"intl402/Temporal/PlainYearMonth/prototype/inLeapYear/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/monthsInYear/chinese-calendar-leap-days.js",
"intl402/Temporal/PlainYearMonth/prototype/since/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/until/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/with/chinese-calendar-leap-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/inLeapYear/chinese-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/monthsInYear/chinese-calendar-leap-days.js",
"intl402/Temporal/ZonedDateTime/prototype/since/chinese-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/until/chinese-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/with/chinese-calendar-leap-dates.js",

// Dangi (Korean) calendar - lunisolar calendar arithmetic
"intl402/Temporal/PlainDate/prototype/inLeapYear/dangi-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/monthCode/dangi-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/monthsInYear/dangi-calendar-leap-days.js",
"intl402/Temporal/PlainDate/prototype/since/dangi-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/subtract/dangi-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/until/dangi-calendar-dates.js",
"intl402/Temporal/PlainDate/prototype/with/dangi-calendar-leap-dates.js",
"intl402/Temporal/PlainDateTime/prototype/inLeapYear/dangi-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/monthCode/dangi-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/monthsInYear/dangi-calendar-leap-days.js",
"intl402/Temporal/PlainDateTime/prototype/since/dangi-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/until/dangi-calendar-dates.js",
"intl402/Temporal/PlainDateTime/prototype/with/dangi-calendar-leap-dates.js",
"intl402/Temporal/PlainMonthDay/from/dangi-30-day-leap-months.js",
"intl402/Temporal/PlainMonthDay/from/dangi-calendar-dates.js",
"intl402/Temporal/PlainMonthDay/prototype/monthCode/dangi-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/inLeapYear/dangi-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/monthCode/dangi-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/monthsInYear/dangi-calendar-leap-days.js",
"intl402/Temporal/PlainYearMonth/prototype/since/dangi-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/until/dangi-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/with/dangi-calendar-leap-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/inLeapYear/dangi-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/monthCode/dangi-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/monthsInYear/dangi-calendar-leap-days.js",
"intl402/Temporal/ZonedDateTime/prototype/since/dangi-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/until/dangi-calendar-dates.js",
"intl402/Temporal/ZonedDateTime/prototype/with/dangi-calendar-leap-dates.js",

// Non-ISO calendar fields - Hebrew/multi-calendar with() operations
"intl402/Temporal/PlainDateTime/prototype/with/non-iso-calendar-fields.js",
"intl402/Temporal/PlainYearMonth/prototype/with/non-iso-calendar-fields.js",
"intl402/Temporal/ZonedDateTime/prototype/with/non-iso-calendar-fields.js",

// Leap year since/until across non-ISO calendars (Chinese + Hebrew)
"intl402/Temporal/PlainDate/prototype/since/leap-year-since.js",
"intl402/Temporal/PlainDate/prototype/until/leap-year-until.js",
"intl402/Temporal/PlainDateTime/prototype/since/leap-year-since.js",
"intl402/Temporal/PlainDateTime/prototype/until/leap-year-until.js",
"intl402/Temporal/ZonedDateTime/prototype/since/leap-year-since.js",
"intl402/Temporal/ZonedDateTime/prototype/until/leap-year-until.js",

// dateStyle with non-ISO calendar formatting (Islamic month names etc.)
"intl402/Temporal/Instant/prototype/toLocaleString/dateStyle.js",
Expand All @@ -218,56 +142,36 @@
"intl402/Temporal/PlainYearMonth/prototype/toLocaleString/dateStyle.js",
"intl402/Temporal/ZonedDateTime/prototype/toLocaleString/dateStyle.js",

// Persian calendar arithmetic
"intl402/Temporal/PlainDate/prototype/toString/basic-persian.js",

// Calendar era handling - requires Chinese/Hebrew calendar arithmetic
"intl402/Temporal/PlainYearMonth/from/calendar-not-supporting-eras.js",
"intl402/Temporal/ZonedDateTime/from/calendar-not-supporting-eras.js",

// Hebrew calendar arithmetic (reference-day, add/subtract with leap months)
"intl402/Temporal/PlainYearMonth/from/reference-day-hebrew.js",
"intl402/Temporal/PlainYearMonth/prototype/add/options-undefined.js",
"intl402/Temporal/PlainYearMonth/prototype/subtract/options-undefined.js",
// .NET ar-EG locale defaults to latn numbering system instead of arab (Arabic-Indic digits)
"intl402/DateTimeFormat/prototype/format/temporal-objects-no-time-clip-non-latin-numerals.js",

// Japanese calendar era boundary resolution
// Japanese era boundary resolution (Heisei/Showa month-day for PlainYearMonth reference day)
"intl402/Temporal/PlainYearMonth/from/reference-day-japanese.js",
"intl402/Temporal/PlainDate/from/japanese-pre-meiji.js",

// .NET ar-EG locale defaults to latn numbering system instead of arab (Arabic-Indic digits)
"intl402/DateTimeFormat/prototype/format/temporal-objects-no-time-clip-non-latin-numerals.js",
// Leap year until - Hebrew calendar year boundary alignment
"intl402/Temporal/PlainDate/prototype/until/leap-year-until.js",
"intl402/Temporal/PlainDateTime/prototype/until/leap-year-until.js",
"intl402/Temporal/ZonedDateTime/prototype/until/leap-year-until.js",

// Leap month numerical months - Chinese/Dangi/Hebrew lunisolar calendar limitations
"intl402/Temporal/PlainDate/prototype/add/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainDate/prototype/add/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainDate/prototype/add/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/PlainDate/prototype/subtract/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainDate/prototype/subtract/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainDate/prototype/subtract/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/add/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/add/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/add/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/subtract/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/subtract/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainDateTime/prototype/subtract/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/add/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/add/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/add/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/subtract/leap-month-chinese-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/subtract/leap-month-dangi-numerical-months.js",
"intl402/Temporal/PlainYearMonth/prototype/subtract/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/add/leap-month-chinese-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/add/leap-month-dangi-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/add/leap-month-hebrew-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/subtract/leap-month-chinese-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/subtract/leap-month-dangi-numerical-months.js",
"intl402/Temporal/ZonedDateTime/prototype/subtract/leap-month-hebrew-numerical-months.js",

// PlainMonthDay from - multi-calendar (constrain, reference-date, reference-year)
// PlainMonthDay non-ISO calendar support needs more work
// PlainMonthDay from - reference year selection, constrain-to-leap-day, and lunisolar dates
"intl402/Temporal/PlainMonthDay/from/chinese-calendar-dates.js",
"intl402/Temporal/PlainMonthDay/from/constrain-to-leap-day.js",
"intl402/Temporal/PlainMonthDay/from/dangi-30-day-leap-months.js",
"intl402/Temporal/PlainMonthDay/from/dangi-calendar-dates.js",
"intl402/Temporal/PlainMonthDay/from/reference-date-noniso-calendar.js",
"intl402/Temporal/PlainMonthDay/from/reference-year-1972.js",

// PlainMonthDay monthCode - reference year selection affects month code for Chinese/Dangi
"intl402/Temporal/PlainMonthDay/prototype/monthCode/chinese-calendar-dates.js",
"intl402/Temporal/PlainMonthDay/prototype/monthCode/dangi-calendar-dates.js",

// PlainYearMonth non-ISO calendar reference day and since
"intl402/Temporal/PlainYearMonth/from/reference-day-chinese.js",
"intl402/Temporal/PlainYearMonth/from/reference-day-hebrew.js",
"intl402/Temporal/PlainYearMonth/prototype/since/chinese-calendar-dates.js",
"intl402/Temporal/PlainYearMonth/prototype/since/dangi-calendar-dates.js",

// === ANNEX B EXCLUSIONS ===

// Acornima parser limitation: HTML-like comments (<!-- and -->) in dynamic Function() bodies/params
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