Conditional Required method for fields?

[Brunnn]

I would like to conditionally set fields as required/nonempty in my validation schema based on the presence or absence of other field(s), for example:

const schema = z.object({
      field1: z.string().requiredIf(ctx => ctx.field3 == false),
      field2: z.number().requiredIf(ctx => ctx.field3 == true),
      field3: z.boolean()
})

Is there a native way of doing that? what would be a good approach for this?
Similiar to what laravel does https://laravel.com/docs/10.x/validation#rule-required-if

I've tried to use discriminatedUnion but since the field that others depend on will not always be a literal type, it did not work.