While this makes sense, my experience is that you end up with just a handful of dependencies for your actual product (“dependencies” in NPM parlance), but a who

While this makes sense, my experience is that you end up with just a handful of dependencies for your actual product (“dependencies” in NPM parlance), but a whole herd of them for your build toolchain (“dev dependencies”). This happens because front end libraries don’t often have many, if any, dependencies themselves for fear bloating the JS slugs using them, whereas the Node libraries used to build it do not need to sweat that and each comes with a whole tree of transitive dependencies. So the exposure your build server has to supply chain attacks for code it runs directly is huge, much bigger than what’s just passing through. And for those toolchain reps, the GP’s point stands.