I'm also making enterprise-grade software with quite a few external dependencies. I had to email the developers of the biggest dependency multiple times because

I'm also making enterprise-grade software with quite a few external dependencies. I had to email the developers of the biggest dependency multiple times because of bugs but they were all fixed within a few weeks in a new patch release. They also went out of their way to provide me with workarounds for my problems. In the NPM world you are on your own.