scalatags

I had previously shied away from React when I had seen it before because I thought it was another templates-in-code approach. I was actually looking for some kind of Javacript equivalent to ScalaTags[1] that I could use in Typescript when I found out how well React and Typescript worked together. I guess react-hyperscript is what I was looking for, but I've grown to quite like JSX. [1] https://github.com/lihaoyi/scalatags

While mentioning other tech, I have found Scala.js with Scala.Rx [1], ScalaTags [2], and some glue [3] a great way to actually do reactive DOM updates based on state change. I find this way cleaner than building and diffing entire DOM trees (even if they are just AST's in JS). Mixed with ScalaCSS [4] you have a nice type safe solution. 1 - https://github.com/lihaoyi/scala.rx 2 - https://github.com/lihaoyi/scalatags 3 - https://github.com/rtimush/scalatags-rx 4 - https://github.com/japgolly/scalacss/

- IDEs for Scala are pretty good, nowadays. They do all of what you mentioned (except unhandled exceptions, because that's a Java-specific thing). - There's no difference between Scala and Scala.js support. To your IDE, Scala.js is Just Scala. - There is a development cycle, absolutely, and it's pretty fast! With Workbench (https://github.com/lihaoyi/workbench) you don't even need to reload the page: it does so automatically! - For React, there is essentially scalajs-react (https://github.com/japgolly/scalajs-react). It does not support inline-XML per se, because it relies more on ScalaTags instead (https://github.com/lihaoyi/scalatags), but at some point there was a proof of concept showing it was possible to implement with macros.