@js-temporal/polyfill

# 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](https://github.com/microsoft/TypeScript/issues/49160)) 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](https://github.com/GoogleChromeLabs/babel-plugin-transform-jsbi-to-bigint) to transpile these operations to native BigInt. - Reject plain date-only strings ([b733c213], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1952), [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1986)) - Reject '-000000' as an extended year value ([670cda6b], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1992)) - Add missing branding checks for Calendar and Timezone classes to match spec changes ([670cda6b], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1995)) Bug fixes: - Temporal class prototypes are no longer writeable ([871d28dc], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1974)) - Throw a RangeError for invalid offset strings ([d5ada8b0], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1976)) - Pad fractional second values correctly in Duration.prototype.toString() ([e046ccdf], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1956)) - Support the numberless output of Hebrew months from Intl.DateTimeFormat ([b06ac47f], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/2034)) - Workaround FireFox bug with Gregory era names ([30c4d4d8], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/2033)) 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](https://github.com/tc39/proposal-temporal/pull/1950)) - 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](https://github.com/tc39/proposal-temporal/pull/2056)) 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](https://github.com/tc39/proposal-temporal/pull/1929)) - Disallow Z designators when parsing strings for Plain Temporal types ([f3f8a994], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1874)) - Allow ISO strings with "Z" + a bracketed IANA name ([70bd9898], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1749)) - 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](https://github.com/tc39/proposal-temporal/pull/1872)) - Remove support for sub-minute offsets in ISO strings ([766e5037], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1871), [Spec PR](https://github.com/tc39/proposal-temporal/pull/1862)) - Throw TypeError on missing options from Duration.total ([4ec075f0], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1720)) - Reject non-integer Duration fields in Duration.with() ([e6b2488d], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1735)) - Ensure an Object is returned from calendar.mergeFields() ([4e63f25f], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1719)) 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](https://github.com/tc39/proposal-temporal/pull/1807)) - Copy options object for PlainYearMonth.{add,subtract} and InterpretTemporalDateTimeFields to prevent user-modified objects from interfering with later operations. ([bafa1bdf], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1748)) - Validate input to Calendar.prototype.fields ([7ebc700e], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1750)) - Stop observably calling into `getPossibleInstantsFor` in `InterpretISODateTimeOffset` ([5448e59f], see also [Spec PR](https://github.com/tc39/proposal-temporal/pull/1688)) - Call `CalendarEquals` correctly ([07ea694e], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1858)) - Fix arithmetic issues when using non-ISO months ([079a3325], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1761)) - Regex: tighten matching of month and day values in datesplit ([b5736546], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1836)) - Fix TS types for required CalendarProtocol methods ([0ee4581f], see also [proposal-temporal polyfill PR](https://github.com/tc39/proposal-temporal/pull/1964)) 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](https://github.com/tc39/proposal-temporal/pull/1875)) - 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](https://github.com/tc39/proposal-temporal/pull/1968/files)) 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]) [f3d0ca9f]: https://github.com/js-temporal/temporal-polyfill/commit/f3d0ca9f2f32beb071a7d25c9732bd38784b3e6d [4f8b04c1]: https://github.com/js-temporal/temporal-polyfill/commit/4f8b04c1caba0360a527cbe8c8d95e2a8642ab6e [b251dc0e]: https://github.com/js-temporal/temporal-polyfill/commit/b251dc0ef48cd7b2edee2f6541ce0cfb6d019e08 [bb59ca97]: https://github.com/js-temporal/temporal-polyfill/commit/bb59ca970b1c0cb70bdafd2896814076c11edd07 [34662a05]: https://github.com/js-temporal/temporal-polyfill/commit/34662a05cfe50e17a02356cbc55ff0ca2365e888 [a4c60241]: https://github.com/js-temporal/temporal-polyfill/commit/a4c602410bb5b711683918cd414568e19c594499 [54fcc4f3]: 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