Add YearWeek like YearMonth ?

[hlehmann]

Simple suggestion : add a YearWeek like we have a YearMonth.

Thinking in terms of weeks is very useful in many tools, calendars, workflows...

A YearWeek could easily be represented by a Date of the first day of the week, like a YearMonth could easily be represented by a Date of the first day of the month.

But as we have a YearMonth what about a YearWeek ?

Since date.weekOfYear is available, we could have a date.getYearWeek() and it could be represented in string with "2019W45".

[sffc]

FYI, CLDR has the data to format this, so there's no blocker from the Intl perspective.

I do want to point out that java.time has YearMonth and MonthDay, but not YearWeek, so leaving out YearWeek would not constitute a lack of a feature relative to at least one other major programming language.

[littledan]

Although this has some meaning, we ultimately have to be a bit selective in the set of types we include in the first release of Temporal. I'd argue that we should omit YearWeek at first, and consider adding it in a Temporal v2.

[pipobscure]

I'd suggest we close this and accept #264 instead.

[ptomato]

We discussed today that the feature set that we want to move forward with is known, and there's been no activity on this for a long time. Closing.

[ptomato]

I've added this for discussion in Temporal V2: js-temporal/proposal-temporal-v2#11