Localise Interval output

[klase]

I've yet to find a way to properly localise interval output. Given an interval with start date 09/03/2018 and end date 09/10/2018, would it be possible to support localised output like the below using toLocaleString on an Interval object?

'September 3 - 10' for 'en-US'
'3 - 10 September' for 'en-GB'

or is this out of the scope for this library?

Thanks

[icambron]

I would love to do this but...it's complicated.

So first, remember that Luxon doesn't have any idea how to do localization itself; it just uses what the browser has built in, and there's no API for localizing things like intervals.

It still may be possible, though. I also maintain Twix, which is a Moment plugin that knows how to make nice strings like that (complicated, because it's "Sept 3-10", but "Sept 3 - Oct 10", etc), although not localized. I tried an experiment in Twix where I could take the localized date format and try to "zipper" it up based on that format instead of just based on hardcoded rules. It was unexpectedly complicated and I abandoned the effort.

So when it came time to do it here, I decided against it for three reasons:

1. it's a fair amount of code to just get right in one language
2. it requires me to impose a bunch of opinions, which didn't fit well in Luxon
3. the localization would be super complicated

So I left it all out. I always thought I'd at least port the formatting parts of Twix to a Luxon plugin and maybe in the process finally finish the localization part, but I never did.

So yes, out of scope.

[klase]

Makes sense. It's not a massive task to deal with this on a per case basis anyhow. Thanks for clarifying.

[wkeese]

Note that you can localize Interval output by leveraging Intl.DateTimeFormat.formatRange.

Sadly, that API is only currently supported on Chrome, although you could fallback to interval.start.toLocalString(options) + " - " + interval.end.toLocalString(options).