0.4.3

Bug fixes:

• Fix an off-by-one error when dates in the Hebrew calendar were created using monthCode, the year was a leap year, and the month was after the leap month ([f3d0ca9f])
• Fix addition of months and years for lunisolar calendars ([4f8b04c1])
• Fix the ISO8601 representation of years between 1 BCE and 999 BCE ([b251dc0e]).
• Fix a bug causing time to appear to go backwards for a small number of milliseconds ([bb59ca97])
• Always validate ISO8601 time components as well as date components ([34662a05])
• Fix comparison of dates that might have a differing number of hours in their respective days ([a4c60241])
• Include calendar reference information when calendarName='always' is passed to various Temporal toString method's options bags ([54fcc4f3])
• Fix a nonconformant use of the relativeTo property bag ([9992f9b1])
• Fix ZonedDateTime.prototype.withPlainTime(null) to throw a TypeError, instead of treating it as midnight ([ec2b0546])
• Fix parsing of some valid Instant strings when they would be out of range before considering the UTC offset ([d9de9e74])
• Bail out early in non-ISO calendar implementations to avoid an infinte loop when calculating the duration between two identical dates. ([6f3c42c9])
• Fix type resolution when using TypeScript Node16 and transpiling to CJS ([9bab0eb5], see also the relevant TypeScript issue)

Non-breaking changes:

• Consistently call observable operations with undefined options arguments, instead of empty objects ([297b8f38])

0.4.2

This version is a patch version enabling TypeScript Node16 support for this package.

Bug Fixes:

• Add types to exports/./import to support Typescript Node16 ([304c86dd])

0.4.1

This version is a patch version enabling polyfill compatibility with Safari versions <15.1 (October 2021 and earlier).

Bug fixes:

• Remove erroneous options from Safari's Intl.DateTimeFormat resolvedOptions bag. The underlying bug in Safari was fixed in Safari 15.1.

0.4.0

This version roughly corresponds with all the changes made to the Temporal polyfill as of the January 2022 TC39 Plenary meeting.

Breaking changes:

• Use JSBI instead of big-integer for Big Integer math operations. If your codebase does not need to polyfill BigInt, consider using the JSBI Babel plugin to transpile these operations to native BigInt.
• Reject plain date-only strings ([b733c213], see also Spec PR, proposal-temporal polyfill PR)
• Reject '-000000' as an extended year value ([670cda6b], see also Spec PR)
• Add missing branding checks for Calendar and Timezone classes to match spec changes ([670cda6b], see also Spec PR)

Bug fixes:

• Temporal class prototypes are no longer writeable ([871d28dc], see also proposal-temporal polyfill PR)
• Throw a RangeError for invalid offset strings ([d5ada8b0], see also proposal-temporal polyfill PR)
• Pad fractional second values correctly in Duration.prototype.toString() ([e046ccdf], see also Spec PR)
• Support the numberless output of Hebrew months from Intl.DateTimeFormat ([b06ac47f], see also proposal-temporal polyfill PR)
• Workaround FireFox bug with Gregory era names ([30c4d4d8], see also proposal-temporal polyfill PR)

Non-breaking changes:

• Rename public ...FromFields types ([3554d7f1])
• Add validation for hard-coded Era data in Calendar.ts ([08e84c9f])
• Improve code in Calendar.ts to handle calendar with a constant era but a variable number of months in a year ([ef8c588b])
• Add an optional calendar to PlainTime, PlainDateTime, and PlainMonthDay ([f8837367], see also Spec PR)
• Only require a year in Gregorian calendar implementations, not a full date ([02aec1c3])
• Include valueOf in the Temporal.Duration type ([b1dd7eb3])
• Expand the types allowed to be used as TimezoneLike and CalendarLike to match the spec ([9d54c646])
• Improve worse-case performance when finding Timezone transition points by over 1000X! ([e70d6324])
• Change Calendar.fields to return an Array, not an Iterable ([3145c6c4], see also Spec PR)

Other:

• Update build dependencies ([500b4c97])
• Run tests against Node 17 on CI ([db63e22a])

0.3.0

This version roughly corresponds with all the changes made to the Temporal polyfill as of the October 2021 TC39 Plenary meeting.

Breaking changes:

• Timezones now require a getOffsetNanosecondsFor method, and no longer fall back to the intrinsic definition (previously provided by Temporal.Timezone#getOffsetNanosecondsFor) if not provided. ([08346dc5], see also proposal-temporal polyfill PR)
• Disallow Z designators when parsing strings for Plain Temporal types ([f3f8a994], see also Spec PR)
• Allow ISO strings with "Z" + a bracketed IANA name ([70bd9898], see also Spec PR)
• Emit ES2020 builds for newer browsers, and emit ES5 for older browsers. ([2331468d], [9e95c62b])
• Temporal.Duration constructor will now throw if given a non-integer ([9df5d068], see also Spec PR)
• Remove support for sub-minute offsets in ISO strings ([766e5037], see also Spec PR, Spec PR)
• Throw TypeError on missing options from Duration.total ([4ec075f0], see also Spec PR)
• Reject non-integer Duration fields in Duration.with() ([e6b2488d], see also Spec PR)
• Ensure an Object is returned from calendar.mergeFields() ([4e63f25f], see also Spec PR)

Bug fixes:

• Fix GetFormatterParts for Firefox Nightly ([47f9132f])
• Fix TS types of RoundTo and TotalOf ([3008a670])
• Fix crash setting day outside current JPN era ([6d3588c3], see also proposal-temporal polyfill PR)
• Copy options object for PlainYearMonth.{add,subtract} and InterpretTemporalDateTimeFields to prevent user-modified objects from interfering with later operations. ([bafa1bdf], see also Spec PR)
• Validate input to Calendar.prototype.fields ([7ebc700e], see also Spec PR)
• Stop observably calling into getPossibleInstantsFor in InterpretISODateTimeOffset ([5448e59f], see also Spec PR)
• Call CalendarEquals correctly ([07ea694e], see also proposal-temporal polyfill PR)
• Fix arithmetic issues when using non-ISO months ([079a3325], see also proposal-temporal polyfill PR)
• Regex: tighten matching of month and day values in datesplit ([b5736546], see also proposal-temporal polyfill PR)
• Fix TS types for required CalendarProtocol methods ([0ee4581f], see also proposal-temporal polyfill PR)

Non-breaking changes:

• Various #round and #total methods now accept string parameters or options bags. Strings are interpreted as the smallestUnit option (or unit for Temporal.Duration#total). ([068e801f], see also Spec PR)
• Add @@toStringTag to TS types ([41ab6bc0])
• Accept string Calendar names in PlainMonthDay and PlainYearMonth constructors ([27b4c7e8])
• Make options optional in Calendar method TS types ([3a09d00d])
• Align implementation of RoundDuration with adjusted spec text ([4a0d0264], see also Spec PR)

Other:

• Bump various dependencies ([47701107], [f5427de9], [310d9d8b])
• Allow launching and debugging tests (both Demitasse and Test262 suites) from the VSCode debug panel ([960d9b76], [7f7c19a1], [4ec6568e], [edcc668b])
• Run the Test262 test suite against this polyfill, for various configurations of the resulting build artifact ([2331468d], [666c69da], [429273ec], [ff937782], [f885253f])
• Remove various pieces of unused code, and add CI testing to detect unused code in PR review ([67f9f6bb], [63bdfcd1])
• Drop the dependency on es-abstract ([d24575f2], [ad7e2e3a], [5b1bc5e2])
• The polyfill's source was ported to TypeScript ([12e4d529], [ac78fd9d], [53f32e0f], [06b806c9], [66fdc765], [50b1c34b], [4724b017], [947a8a5e], [fdbf7e01], [fa60af6a], [da753f2f], [f4db8b0b], [4a38420d])
• Document the release process for this polyfill ([c55818b6])