Are they .json file? If so,
You don’t need to do anything, this is the correct situation.
If they are .tid file with title: $:/authorname/xxxplugin/xxx, that may be some mistake. You can delete those .tid file and retry drat & drop plugins to install them in your nodejs wiki.
A sad story, this is why I find bad document of nodejs plugin waste many normal users’ time.
Plugins in nodejs wiki may apperas as json file inside ./tiddlers subdirectory.