schema is only validation? can we account for coercion too?

[airtonix]

It'd be nice to be able to use zod coercion to turn yaml ISO date strings into JS Date objects.

z.string().pipe(z.coerce.date())

z.string().transform((value) => new Date(value))

but these end up creating typeerrors:

[sdorra]

You can use coerce or transform, but the output must be a valid JSON object since content collections store documents as JSON files. There is an existing issue addressing the problem with the date (#29).