I am using Zod to validate my schema, but one particular part of the object I am expecting can have one of three different key/values.

For example:

{
  results: {
    // I'll only ever receive one of these resultTypes at a time
    resultType1: { /* sub-object specific to result type 1 */ }
    resultType2: { /* sub-object specific to result type 2 */ }
    resultType3: { /* sub-object specific to result type 3 */ }
    ...
  }
}

So results will only contain one of the different resultTypeX props.

Currently I have added optional to each of the types, but that leaves me open to validating true an object that has a results object with none of those three, when I want to specify that I have exactly one of them…

const resultType1 = z.object({ ... });
const resultType2 = z.object({ ... });
const resultType3 = z.object({ ... });

const schema = z.object({
  results: z.object({
    resultType1.optional(),
    resultType2.optional(),
    resultType3.optional()
  })
});

I know there is the required attribute, but I’m not entirely sure that it is valid here to do what I’m wanting?

Is there a way to make this specification? Could it be an Enum?