> Every single JS lib, pipeline tool, framework is on npmjs.com (react, webpack, bootstrap, expressjs, and 100'000s others). It's the ecosystem that every contender would love to be.

This is only a strength if you accept that those libs (and their dependencies, and their dependencies' dependencies, and so on...) are adequately scanned for malicious behavior. If you don't accept that, then the incredibly deep dependency graph that is typical of frontend projects these days is a liability.