Missing dependency for stricter Yarn v2
Under Yarn v2, the dependency handling is more strict. You can’t require
indirect dependencies.
For example, this line fails in Antora because the Opal runtime is not a direct dependency of @antora/asciidoc-loader
:
https://gitlab.com/antora/antora/-/blob/master/packages/asciidoc-loader/lib/load-asciidoc.js#L4