Stabilize Char-to-Int conversions KT-45874

libraries/stdlib/js-ir/builtins/Char.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2021 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -12,9 +12,8 @@ package kotlin
 // TODO: KT-35100
 //public inline class Char internal constructor (val value: Int) : Comparable<Char> {
 public class Char
-@OptIn(ExperimentalUnsignedTypes::class)
-@ExperimentalStdlibApi
-@SinceKotlin("1.4")
+@SinceKotlin("1.5")
+@WasExperimental(ExperimentalStdlibApi::class)
 constructor(code: UShort) : Comparable<Char> {
     private val value: Int = code.toInt()