initMessageEvent

fun initMessageEvent(    type: String,     bubbles: Boolean,     cancelable: Boolean,     data: Any?,     origin: String,     lastEventId: String,     source: UnionMessagePortOrWindowProxy?,     ports: Array<MessagePort>)(source)

Since Kotlin

1.1
fun initMessageEvent(    type: String,     bubbles: Boolean,     cancelable: Boolean,     data: JsAny?,     origin: String,     lastEventId: String,     source: UnionMessagePortOrWindowProxy?,     ports: JsArray<MessagePort>)(source)

Since Kotlin

1.8