Union type for validator

[wmonk]

Is there support for something like zod unions in the Validator module? The key use case here is for validating query string parameters that could be string or array. It should be something like:

import { schema } from "@ioc:Adonis/Core/Validator";

schema.create({
  category: schema.union([schema.string(), schema.array().members(schema.string())]
});

This would validate both single query string parameters as well as multiple.

Any ideas? Or is this a feature request?

@RomainLanz I saw you reply to a validator feature request, so you might be interested :)