SonarSource products now support more than 25 languages and Java was the very first one.
The 600 rules which we have for Java are the result of a huge work over a long period of time.
We started working on Kotlin much more recently. We can definitely try to apply a good number of our Java rules to Kotlin but it’s far from trivial despite what you may think: it will require a big effort on our side and I don’t know when we will do this effort.
We have limited resources, we have to make choices. Kotlin doesn’t have a high priority for us this year but we certainly don’t forget Kotlin.