Fix JS Map.keys.remove return value #KT-65525

libraries/stdlib/js/src/kotlin/collections/HashMapEntry.kt

@@ -20,7 +20,7 @@ internal class HashMapKeys<E> internal constructor(
     override fun clear() = backing.clear()
     override fun add(element: E): Boolean = throw UnsupportedOperationException()
     override fun addAll(elements: Collection<E>): Boolean = throw UnsupportedOperationException()
-    override fun remove(element: E): Boolean = backing.remove(element) != null
+    override fun remove(element: E): Boolean = backing.removeKey(element)
     override fun iterator(): MutableIterator<E> = backing.keysIterator()
 
     override fun checkIsMutable() = backing.checkIsMutable()

libraries/stdlib/js/src/kotlin/collections/InternalHashMap.kt

@@ -348,6 +348,14 @@ internal class InternalHashMap<K, V> private constructor(
         }
     }
 
+    override fun removeKey(key: K): Boolean {
+        checkIsMutable()
+        val index = findKey(key)
+        if (index < 0) return false
+        removeEntryAt(index)
+        return true
+    }
+
     private fun removeEntryAt(index: Int) {
         keysArray.resetAt(index)
         valuesArray?.resetAt(index)

libraries/stdlib/js/src/kotlin/collections/InternalMap.kt

@@ -22,6 +22,7 @@ internal interface InternalMap<K, V> {
     fun containsOtherEntry(entry: Map.Entry<*, *>): Boolean
 
     fun remove(key: K): V?
+    fun removeKey(key: K): Boolean
     fun removeValue(value: V): Boolean
     fun removeEntry(entry: Map.Entry<K, V>): Boolean
 

libraries/stdlib/js/src/kotlin/collections/InternalStringMap.kt

@@ -173,6 +173,12 @@ internal open class InternalStringMap<K, V> : InternalMap<K, V> {
         return removingValue
     }
 
+    override fun removeKey(key: K): Boolean {
+        val index = findKeyIndex(key) ?: return false
+        removeKeyIndex(key, index)
+        return true
+    }
+
     internal open fun removeKeyIndex(key: K, removingIndex: Int) {
         jsDeleteProperty(backingMap.unsafeCast<Any>(), key as Any)