optional with default is marked nullable in Output type

[ItsMeBrianD]

Doing my first exploration with Valibot this morning, and running into something that feels a little counterintuitive.

Given some schema:

const myObjectType = object({
  arrayField: optional(array(string()), ['Hi!']),
});

/*
Resulting type:
{ arrayField?: string[] }

Expected Result:
{ arrayField: string[] }
*/

type MyObjectType = Output<typeof myObjectType>;

const ThisShouldFail: MyObjectType = {};

Because MyObjectType is defined using Output, I would expect arrayField to be required, rather than being marked optional.
Is this due to something I am doing incorrectly?

[fabian-hiller]

It works as it should for me. You can have a look here in the playground.