Okay, I believe I may have gotten it working. It’s strange that this isn’t synonymous with Maven. Nonetheless, I was able to get it working by modifying the content selector expression from:
/|/@companyB/|/@companyB/npm-dep-1/.*
to:
/|/@companyB/|/@companyB/npm-dep-1.*
I removed the final / in the expression before the catch-all and it was able to download.