alt Hacker NewsYou’d be getting the supply chain put together by the software author in either case. It’s common to do both badly, but if you care about doing it well, that’s easier with npm (e.g. shrinkwrap, as mentioned) and can be taken farther (the non-varying artifact thing).
Npm dependencies resolve at install time though, so some of the pinned versions may have changed ownership or otherwise been modified since the author pinned them. With the curl | bash solution you're getting a singular supply chain packaged by the author at release time.