JS kotlin.dom: deprecate asElementList harder.

Minor: correct exception message.

js/js.libraries/src/dom/Dom.kt

@@ -70,7 +70,7 @@ fun Document?.elements(namespaceUri: String, localName: String): List<Element> {
  *
  * If you want to get a snapshot filtered to contain elements only it's better to use [filterElements] function.
  */
-@Deprecated("This API is going to be removed", level = DeprecationLevel.WARNING)
+@Deprecated("This API is going to be removed, use asList() as a close replacement instead.", ReplaceWith("asList() as List<Element>", "org.w3c.dom.asList"), level = DeprecationLevel.ERROR)
 public fun NodeList.asElementList(): List<Element> = ElementListAsList(this)
 
 /**

js/js.libraries/src/dom/ItemArrayLike.kt

@@ -29,6 +29,6 @@ public fun <T> ItemArrayLike<T>.asList(): List<T> = object : AbstractList<T>() {
 
     override fun get(index: Int): T = when {
         index in 0..lastIndex -> this@asList.item(index) as T
-        else -> throw IndexOutOfBoundsException("index $index is not in range [0..$lastIndex)")
+        else -> throw IndexOutOfBoundsException("index $index is not in range [0..$lastIndex]")
     }
 }