Listable Type

[ilan-gold]

Hello! I'm trying to write a little has helper, something like:

export async function has(root: zarr.Group<FetchStore>, path: string) {
  try {
    await zarr.open(root.resolve(path));
  } catch (error) {
    if (error instanceof zarr.NodeNotFoundError) {
      return false;
    }
    return true;
  }
}

but the root could have as its type a zarr.Group<Listable<FetchStore>> since it can come from tryWithConsolidated. But I can't annotate this function since Listable is not exported. Any ideas?

[manzt]

I can work on exporting hat, but in the meantime you can use the ReturnType helper from TS to create a type alias:

type MaybeListable = Awaited<ReturnType<typeof tryWithConsolidated>>;

[manzt]

See #176

[ilan-gold]

Thanks!