I don't think it's lagging - it's just working at "internet spec speed". That seems like an eternity, but time flies like an arrow (remember supporting IE5.5?!)

I don't think it's lagging - it's just working at "internet spec speed". That seems like an eternity, but time flies like an arrow (remember supporting IE5.5?!)... I already use all ES6/7 features (plus modules support with <script type="module">) for many of my personal projects and experiments: no transpilers, no build tools. I like knowing that in 15 years I'll be able to double click an index.html and run/edit my old experiments without worrying about how I'd to find the right version of some long-dead build tool - just like I do with my javascript experiments from 2002!