I was just trying to make a third party module out of npm, not making another dependency management. btw It'd be good to add the dedupe feature. appreciate for the feedback !

It's not a whole another package like yarn. It just works the same as npm install, but better than original.

@yladiz explained it well. I had to minimize the words to a single word like "unspecified". seems like you struggled with understanding what it really means, Is there any recommendation to change?

I think it's if there's some dependency that the author of the package used, but wasn't specified in the package.json file.