[Kjeldahl]

Disregarding the history behind js2-mode, if it has been decided that Emacs 27 will feature a much improved js-mode, I was just puzzled that it wasn't put into 26.x as a package already.

I couldn't remember the name of Yamamoto, which is why I said the author of the railwaycat port, where the latter is mostly packaging if I understand it correctly. But Yamamoto is doing most of the heavy lifting yes, and I'm thankful for it.