Some background - I'm a Java developer by trade, and I've recently been evaluating Kotlin (on the JVM). No complaints with any of that side of things, looks great! The last time I did any serious web dev was about a decade ago and obviously things have changed a lot since then... We're starting on some web dev now though and my hope is that we'll end up more productive if we can use Kotlin on both client (JS) and server (JVM). So while I've also dabbled with various client side/JS technologies and languages in IDEA, I have very little experience with any of them just yet.