* Import of Intl.Locale from #39664
* Handle updating es2020.intl and add es2021 for new DateTimeFormatOptions options - re: #39664
* Extends DateTimeFormatOptions for new Intl APIs - re: #45420
* Handle migrating Intl.NumberFormat.formatToParts to es2018 (keeping esnext.intl around)
* Adds Intl.DisplayNames to es2020 - re: #44022
* Remove attributes added in es2021 from es2020 - re: #42944
* Add a reference to es2021 in the command line parser
* Adds some docs about the lib files
* Baselines
* Allow undefined in Intl inputs to allow for ergonomic usage of exactOptionalPropertyTypes - see #45652
* Adds some tests covering the APIs
* Apply suggestions from code review
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
* Handle PR feedback
* More review improvements
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
* Updates Dom lib with TSJS changes, adding a new library for webworker iterable
Co-authored-by: Nathan Shively-Sanders <nathansa@microsoft.com>
* Fixes tests
Co-authored-by: Nathan Shively-Sanders <nathansa@microsoft.com>
* Improve typing for Generators and Async Generators
* Add TReturn and TNext to Iterator, IterableIterator, etc.
* Update ts internal Iterator to be assignable from global Iterator
* Make 'done' optional in IteratorYieldResult
* Revert Iterable and IterableIterator to simpler versions plus other fixes
* Add additional inference tests
* Added additional tests
* PR cleanup and minor async iteration type fix
* Updated diagnostics message and added non-strict tests
* Fix expected arity of Iterator/AsyncIterator
