How do I map an array of values into discriminated union options

[Aaronius]

I'd like to be able to map an array of string values into discriminated union options and use them with z.discriminatedUnion. Here's what I'm trying to do:

const validationSchema = z.discriminatedUnion("taxClassification", Object.values(TaxClassification).map(taxClassification => {
  return z
    .object({
      taxClassification: z.literal(taxClassification),
      exemptPayeeCode:
        taxClassificationExemptPayeeCodeSchemaMap[taxClassification],
      exemptFatcaCode:
        taxClassificationExemptFatcaCodeSchemaMap[taxClassification],
    })
});

I can't though because "Source provides no match for required element at position 0 in target."

I would typically try to type my mapped array as [ZodDiscriminatedUnionOption, ZodDiscriminatedUnionOption, ...ZodDiscriminatedUnionOption[] before passing it into z.discriminatedUnion, but Zod doesn't seem to expose the ZodDiscriminatedUnionOption type. Is there a better way?

[JacobWeisenburger]

I have played around with this and I don't really see a good solution without changing zod's code. Even if I manually export ZodDiscriminatedUnionOption, I'm still running into problems. Would you like to make this into an issue? In my opinion, this is a bug. I think that you should be able to do what you are trying to do.

[Aaronius]

Sure! That would be great! Thank you.

[cawa-93]

@Aaronius Could you show how you solve this problem?

[Aaronius]

I didn't, unfortunately. @JacobWeisenburger created #989, which was closed but not actually fixed and I can't get anyone to re-open it. However, someone else reported the same issue in #1181.