date validation optional not working

[rayanazzam1991]

Hello i am trying to validate date but i want it optional that means if the user enter a date then validate it but if he/she left it with no value i don't want to validate it.
birth_date: zod.date().optional(),
that's not worked for me

[igalklebanov]

Hey 👋

What errors are you getting?

[colinhacks]

Can't replicate, this is working for me.

const schema = z.object({
  birth_date: z.date().optional(),
});

schema.parse({});

My guess is that the form is returning a default value of "" when no input is entered into the form. There's a few ways to handle this:

const schema = z.object({
  birth_date: z.date().optional().catch(undefined),  // any error will cause `undefined` to be returned
  birth_date: z.preprocess(val => val === "" ? undefined : val, z.date().optional()) // convert empty string to undefined with preprocess
})