NPM actually works like this afaik (you can have multiple versions of a given package in tree). Vendoring is another way to work around the single-version per

NPM actually works like this afaik (you can have multiple versions of a given package in tree). Vendoring is another way to work around the single-version per name requirement. It's mainly problematic with shared types and when they "escape" over the API boundary (ie. are exposed somehow).