Expose parts in sl-format-date

[joeldrapper]

It would be really useful to be able to select each part (day, month, year, etc.) of the format date element for styling. I’m happy to work on this as a PR if it’s something the maintainers are interested in.

[claviska]

We use the Intl.DateTimeFormat API to output dates in various languages. As far as I know, there's no way to wrap chunks of its output.

To do this, you'd probably need to parse the attributes (which were designed specifically for the Intl.DateTimeFormat API) and generate the wrapped dates/times independently. Of course, the order and presentation varies for each locale, so you'd have to add tons of logic that we currently get for free.

Unless I'm missing a way to do this through Intl, I don't see it happening without a significant amount of code.

[joeldrapper]

Oh that sounds like a lot. 🤔

Given that each attribute is provided independently, that doesn't sound too bad, but you would then need to assemble each part in the correct order, which might be tricky.

[joeldrapper]

I would probably be easier to parse the different parts from the final string after generating it. The output is quite predictable in terms of its format, even if each part can be in a different order, so a few simple regular expressions might work. The challenge would be to find and test all possible edge cases.