feat(DATE): Add Temporal Adapter

[Akxe]

Feature Description

The Temporal API has been almost done for a year now.

Extract from README.MD:

NOTE: Although this proposal's API is not expected to change, implementers of this proposal MUST NOT ship unflagged Temporal implementations until IETF standardizes timezone/calendar string serialization formats. See tc39/proposal-temporal#1450 for updates.

Use Case

If the adapter were created, people could start to experiment with this. Also, the could be THE final adapter to exist. (If temporal lives to meet expectation)

[Akxe]

This could be solved by adding an adapter method `getMonthList` that would return a readonly array of length 12.

…

---------- Original e-mail ---------- I just tried to implement based on the polyfill. Unfortunately I am running into an issue because the calendar view expects the month to start at 0 ... See: https://github.com/angular/components/blob/main/src/material/datepicker/month-view.ts#L403C1-L404C1 Since with Temporal the month starts with 1 we can not use index based usage of the month names. I tried working around this by adding a dummy object into the array. But then the month view gets broken... Another issue is here: https://github.com/angular/components/blob/main/src/material/datepicker/year-view.ts#L306 Using fixed months array results in trying to create a month 0 which is no possible with Temporal Demo: https://stackblitz-starters-g4yw3h.stackblitz.io

[digaus]

This could be solved by adding an adapter method getMonthList that would return a readonly array of length 12

Also considering the different calendar options, this might be a better solution (not every calendar has 12 months)

I also was able to implement it by adding or substracting the month where I had to:

Stackblitz

[gausmadi]

Anything planned here?

Temporal is currently supported as a TP in Firefox and Safari (not fully). Seems like it will soon hit all major browsers.

A Temporal date adapter would be nice to have.

https://developer.mozilla.org/en-US/blog/javascript-temporal-is-coming/

[stasberkov]

Temporal is already supported by Firefox. Also there is a polyfill for it https://www.npmjs.com/package/@js-temporal/polyfill.
Can you revise the priority, please?

[perceptron8]

Temporal is also already supported by Chrome (144, currently in beta). In about 4 weeks it will become stable.

[cromefire]

Chromium 144 is now rolling out and for Apple temporal-polyfill can be used in the meantime (they seem to be working on it in TP). That polyfill is pretty high quality and scores well on most test262 tests, so it should be a drop-in polyfill for probably 99% of cases. That also means that the proposal should be transitioning to Stage 4 now.