I used "npm link express" and it broke my project. How do I undo this?

My express project couldn't find a node_module. On stack overflow I was an answer that said to run "npm link express." I ran that, and now my project can't even find jade so I can't even to a view. What doesn't "npm link do" and how do I undo that command?

Submitted December 17, 2016 at 01:34PM by pm_me_gold_plz