All examples in the official docs (bar a few things like custom plugin development) are in Kotlin now. Also the support for the Kotlin build scripts in IDEA its

All examples in the official docs (bar a few things like custom plugin development) are in Kotlin now. Also the support for the Kotlin build scripts in IDEA itself is a ton better now, it used to break all the time and desync etc but no more. Gradle certainly isn't great but it's crappiness is overblown especially when comparing it to stuff like npm + webpack.