repeatable numbers

[massimopalmieri]

hi,
I'm trying to parse a URLSearchParams and I have a field example_ids that can be an array of numbers, but I need it to be optional, so that if the URL is ?example_ids= the parsed data is example_ids: [] (or even example_ids: null or undefined would be fine). What I'm getting instead is example_ids: [null]. Is this the expected behaviour? If yes, how can I achieve what I need? My schema looks like this:

const validator = withZod(
  z.object({
    test_ids: zfd.repeatableOfType(zfd.numeric(z.number().optional())),
  })
)