[Vuejs]-Bootstrap-vue components not imported when importing an npm package from local

npm pack produces a .tgz file https://docs.npmjs.com/cli/pack.html

Importing from this file instead of from dist has the same behaviour as importing from a package on the registry.

Still not sure why or what npm does in creating this file, but that answers at least the question of how to mimic the behaviour of a registered package when importing from local/a repository.