KClass.qualifiedName not supported in JavaScript?

#1

The document of kotlin.reflect.KClass says qualifiedName is supported by JS and Native:

However, when I use KClass.qualifiedName in the JavaScript module of a multi-platform project, both IDEA and the Kotlin compiler complain that it is not supported by JavaScript yet:

So is the document wrong?

#2

Which version of Kotlin are you using? Is it the latest?