[meroje]

Yes, and install speed too since you're writing the files once

[avaer]

Runtime speed also. Requiring only one copy means only one instance is parsed and optimized by the js engine. Which saves time and heats cache.

[gedy]

Yes, but only if you aren't already transpiring minifying code such as for front end frameworks

[avaer]

Which is most of the time, on the backend.