hi i'm trying to configure the node plugin to run protractor tests. I've added a couple of dependencies and everytime pants calls npm to re-install them:

17:32:40 00:00   [resolve]
17:32:40 00:00     [ivy]
17:32:40 00:00     [node]
17:32:40 00:00       [cache] 
                   No cached artifacts for 1 target.
                   Invalidated 1 target.