JS backend: cosmetic changes in javautil.kt:

- added some methods to AbstractList
 - fixed codestyle
 - moved up LinkedList declaration

js/js.libraries/src/core/javautil.kt

@@ -43,6 +43,7 @@ public abstract class AbstractList<E>(): AbstractCollection<E>(), MutableList<E>
     override fun get(index: Int): E = js.noImpl
     override fun set(index: Int, element: E): E = js.noImpl
 
+    override fun add(e: E): Boolean = js.noImpl
     library("addAt")
     override fun add(index: Int, element: E): Unit = js.noImpl
     override fun addAll(index: Int, c: Collection<E>): Boolean = js.noImpl
@@ -57,12 +58,28 @@ public abstract class AbstractList<E>(): AbstractCollection<E>(), MutableList<E>
     override fun listIterator(index: Int): MutableListIterator<E> = js.noImpl
 
     override fun subList(fromIndex: Int, toIndex: Int): MutableList<E> = js.noImpl
+
+    override fun size(): Int = js.noImpl
+
+    override fun equals(other: Any?): Boolean = js.noImpl
+
+    fun toString(): String = js.noImpl
 }
 
 library
 public open class ArrayList<E>(capacity: Int = 0) : AbstractList<E>() {
 }
 
+library
+public open class LinkedList<E>() : AbstractList<E>() {
+    public override fun get(index: Int): E = js.noImpl
+    public override fun set(index: Int, element: E): E = js.noImpl
+    public override fun add(index: Int, element: E): Unit = js.noImpl
+    public fun poll(): E? = js.noImpl
+    public fun peek(): E? = js.noImpl
+    public fun offer(e: E): Boolean = js.noImpl
+}
+
 library
 public open class HashSet<E>() : AbstractCollection<E>(), MutableSet<E> {
 }
@@ -95,16 +112,6 @@ public open class HashMap<K, V>(capacity:Int=0) : MutableMap<K, V> {
     public override fun entrySet(): MutableSet<MutableMap.MutableEntry<K, V>> = js.noImpl
 }
 
-library
-public open class LinkedList<E>(): AbstractList<E>() {
-    public override fun get(index: Int): E = js.noImpl
-    public override fun set(index: Int, element: E): E = js.noImpl
-    public override fun add(index: Int, element: E): Unit = js.noImpl
-    public fun poll(): E? = js.noImpl
-    public fun peek(): E? = js.noImpl
-    public fun offer(e: E): Boolean = js.noImpl
-}
-
 library
 public class StringBuilder() : Appendable {
     override fun append(c: Char): Appendable? = js.noImpl
@@ -115,12 +122,13 @@ public class StringBuilder() : Appendable {
 }
 
 library
-public class NoSuchElementException() : Exception() {}
+public class NoSuchElementException() : Exception() {
+}
 
 library
 public trait Enumeration<E> {
-    open public fun hasMoreElements() : Boolean
+    public fun hasMoreElements(): Boolean
-    open public fun nextElement() : E
+    public fun nextElement(): E
 }
 
 native