How to fix NPM Shrinkwrap listing 127.0.0.1 in "Resolved"

Short answer: Run npm cache clear

When npm installs a package from the local cache, it results in putting a 127.0.0.1 url in the resolved property for the package. This can result in some really bad problems replicating the install on another machine. Simply clearing the npm cache can fix this issue.

When looking for why I was getting this issue, I wasn't able to find any relevant topics from searching, so hopefully you found this and your issue is fixed.