Cannot combine `pre-transform` with `optional`

[EpicEricEE]

Suppose I want an optional date as an argument. The code

#import "@preview/valkyrie:0.2.1" as z

#let schema = z.dictionary((
  date: z.date(optional: true, pre-transform: z.coerce.date)
))

#z.parse((date: none), schema)

results in the error Unknown date of type 'none' accepts: datetime, str, int, and object

[EpicEricEE]

Oops, just saw that #33 was closed yesterday.

[jamesrswift]

Would adding an option to skip pre-transforms if defaulted by amenable?

[EpicEricEE]

I'm not familiar with the package as this my first time using it, so I don't really have an opinion on that