I am using Scala.js for a week now, and I am surprised by how mature it already is. Optimized Scala.js is less than a megabyte, and therefore actually usable. O

I am using Scala.js for a week now, and I am surprised by how mature it already is. Optimized Scala.js is less than a megabyte, and therefore actually usable. Obviously there are caveats, for example Character.isLetter is not implemented; but the entire collection library of Scala is available.