I may be out of the loop here, but wasn&#x27;t the big benefit of JavaScript everywhere that it&#x27;s the <i>same</i> JavaScript everywhere?<p>Does it matter if server-side is JavaScript Next Gen and browsers lag by a few years of features?<p>Too many more iterations of this and you&#x27;ll be back to two programming languages again and web developers heads will explode from having to learn <i>two</i> things instead of <i>one</i> things.