Adjust stdlib to contains* transformation

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

@@ -14,14 +14,14 @@ public interface Comparator<T> {
 @library
 public abstract class AbstractCollection<E>() : MutableCollection<E> {
     override fun isEmpty(): Boolean = noImpl
-    override fun contains(o: Any?): Boolean = noImpl
+    override fun contains(o: E): Boolean = noImpl
     override fun iterator(): MutableIterator<E> = noImpl
 
     override fun add(e: E): Boolean = noImpl
     override fun remove(o: Any?): Boolean = noImpl
 
     override fun addAll(c: Collection<E>): Boolean = noImpl
-    override fun containsAll(c: Collection<Any?>): Boolean = noImpl
+    override fun containsAll(c: Collection<E>): Boolean = noImpl
     override fun removeAll(c: Collection<Any?>): Boolean = noImpl
     override fun retainAll(c: Collection<Any?>): Boolean = noImpl
 

js/js.libraries/src/core/regex.kt

@@ -180,8 +180,8 @@ private fun RegExp.findNext(input: String, from: Int): MatchResult? {
             override val size: Int get() = match.size()
             override fun isEmpty(): Boolean = size() == 0
 
-            override fun contains(o: Any?): Boolean = this.any { it == o }
-            override fun containsAll(c: Collection<Any?>): Boolean = c.all({contains(it)})
+            override fun contains(o: MatchGroup?): Boolean = this.any { it == o }
+            override fun containsAll(c: Collection<MatchGroup?>): Boolean = c.all({contains(it)})
 
             override fun iterator(): Iterator<MatchGroup?> = indices.asSequence().map { this[it] }.iterator()