This is confusing b/c there are 2 javascript environments involved. Let's pretend that instead of being written in javascript, it was written in ruby/python/c. Now it would look like this: "A (client-side) javascript package manager written in ruby/python/c"

It's not for managing node.js packages, it's for managing client-side .js packages, and it just happens to be written in javascript to be run by node.js