Package ships no license file and its upstream repository
(https://github.com/jslicense/spdx-license-ids) contains none. The package README states the
license only as a link to the Creative Commons deed.

Canonical CC0-1.0 legal text, the license declared in the package's package.json, retrieved via
`gh api licenses/cc0-1.0`. CC0 is a public-domain dedication and carries no copyright holder.