Add missing import

Author: e5l

src/jsMain/kotlin/dom-js.kt

@@ -4,6 +4,7 @@ import kotlinx.html.*
 import kotlinx.html.consumers.*
 import kotlinx.html.org.w3c.dom.events.Event
 import org.w3c.dom.*
+import kotlin.reflect.KProperty
 
 private inline fun HTMLElement.setEvent(name: String, noinline callback : (Event) -> Unit) : Unit {
     asDynamic()[name] = callback