How to validate a string with maximum length?

It’s an obvious problem but for some reason this isn’t in the manual. How to validate something is a string, with all it’s subtle needs, but has a maximum length?

Seems a really basic one. But I can’t see any example how it would work, I can’t do a 'string' && value.length < 255 cause that wouldn’t work. So how to do a validation which takes a primary type and adds optional extras to it?

[CalebLovell]

in case anyone else stumbles across this thread like I did, length is now size. 😃

[ianstormtaylor]

This is solved in the newest release with “refinements”, specifically the length refinement, used like:

import { string, length } from 'superstruct'

const ShortString = length(string(), 1, 9)

And length works with the array struct too.