solving the song problem
The issue here isn't with left pad, it is with dependency frameworks like npm that make it all too easy to consume disparate collections of third party libraries in a way that makes this sort of thing inevitable.
Should the language have it built in? Probably, but that is going to be years away before you can safely assume any browser hitting your site supports it. The bigger question is what function disappears next for {reasons=null,noticeDays=0}.