This is similar to Madge -- except that this shows dependencies between the packages in a monorepo -- not between the modules within a package.

It therefore parses the dependencies in the several package.json files -- instead of parsing import statements in source code.

This implementation is actually unrelated to Madge -- except for its name i.e. "madge-packages" -- it has a different author.

For an example of the diagrams which this tool creates, see this README -- those diagrams are created by this batch file.