I wonder this means there could be a faster npm install tool that pulls from a registry of small utility packages that can be replaced with modern JS features, to skip installing them.
It couldn't inine them, but it could replace ponyfils with wrappers for native impls, and drop the fallback. It could provide simple modern implementations of is-string, and dedupe multiple major versions, tho that begs the question what breaking change lead to a new mv and why?