min() together with optional()

[medihack]

I would like to make a field optional, but if it is set, then it must be at least 8 chars long. I tried z.string().min(8).optional() (which seems to be typed valid in contrast to z.string().optional().min(3)). Unfortunately, it still requires the field to be set (with at least 8 chars) and the optional is ignored.

A possible workaround seems to be z.string().min(8).max(100).or(z.string().max(0)), but it looks quite ugly.

Originally posted by @medihack in #553

[medihack]

As more as I think about it, z.string().min(8).max(100).or(z.string().max(0)) seems to be completely ok. And optional does not mean that the string should be empty, but the field should be null.