[MereInterest]

I'd love to have a way to take a `Date` object and set it as the value of a `datetime-local` input. Sure feels like that should be straightforward to do, without requiring any weird conversions like it does.

[mr_toad]

You might be interested in http://tc39.es/proposal-temporal/docs/index.html

[MereInterest]

Wow. `zonedDateTimeISO` looks like exactly what I was hoping for. I'm kind of surprised that there isn't anything analogous to `strftime`, though.