NPM package adds postinstall self-ad

I found this discussion quite interesting. This package is a low-level polyfill library, and is used in a lot of places (you can tell, according to github by 2,5 millions other apps/libs).

However, the author does not really have any money from it, maintaining it during his free time. Naturally, why people would go here, to such a low-level dependency?

Personally, I think Babel should support the author. But it shows an interesting phenomenon, when low-level libraries don't give you anything, even if half of the JS toolchain depends on it.