hakimel/reveal.js — comment on commit 401c554c8001a6c444c1e70d5e5cd728d7740b38
File:  line 0
By hakimel:

Debated that myself as well... Came to the conclusion that I wanted broader compatibility in a project that I'm using this library for.

Using a polyfill is a good idea since it doesn't need to exist in this repo.