JavaScript Allongé(es2015) or Eloquent Javascript (es2014?)

This “wiki” demands that I read eloquent javascript which I appreciate, but it’s based of older standard of JS which meteor isn’t backwards compatible to, to my awareness. In sight of fact that I’m underdisciplined, there’s really not enough zen to really follow es2015 format without a introduction short of a book. I also imagine that the two books grade differently with eloquent being the beginner one, whereas allonge is less so.