dscc-gen viz: does not allow domain-name like GCS bucket names

[shevron]

As we own / have verified the domain mycompany.com, have a bucket named some-bucket.mycompany.com that we'd like to use to host GDS visualizations; However, dscc-gen viz does not accept gs://some-bucket.mycompany.com/dev as a valid "dev" directory. I'm getting an error telling me that this is not a valid GCS bucket name, when in fact it is.

$ npx @google/dscc-gen viz
npx: installed 320 in 24.835s
? Project name mycompany-gds-viz
? What is your "dev" directory? gs://
>> Error: gs://some-bucket.mycompany.com/dev is an invalid gcs bucket name.