Align the Boolean.hashCode() value across platforms

Boolean.hashCode() should return 1231/1237 for true/false correspondingly.

As a part of efforts to stabilize Native stdlib.

libraries/stdlib/js-ir/runtime/coreRuntime.kt

@@ -48,11 +48,15 @@ internal fun hashCode(obj: dynamic): Int {
         "object" -> if ("function" === jsTypeOf(obj.hashCode)) (obj.hashCode)() else getObjectHashCode(obj)
         "function" -> getObjectHashCode(obj)
         "number" -> getNumberHashCode(obj)
-        "boolean" -> if(obj.unsafeCast<Boolean>()) 1 else 0
+        "boolean" -> getBooleanHashCode(obj.unsafeCast<Boolean>())
         else -> getStringHashCode(js("String")(obj))
     }
 }
 
+internal fun getBooleanHashCode(value: Boolean): Int {
+    return if (value) 1231 else 1237
+}
+
 private const val POW_2_32 = 4294967296.0
 private const val OBJECT_HASH_CODE_PROPERTY_NAME = "kotlinHashCodeValue$"
 

libraries/stdlib/js-v1/src/js/core.js

@@ -42,7 +42,7 @@ Kotlin.hashCode = function (obj) {
         return Kotlin.numberHashCode(obj);
     }
     if ("boolean" === objType) {
-        return Number(obj)
+        return obj ? 1231 : 1237;
     }
 
     var str = String(obj);

libraries/stdlib/wasm/builtins/kotlin/Boolean.kt

@@ -58,7 +58,7 @@ public class Boolean private constructor(private val value: Boolean) : Comparabl
         if (this) "true" else "false"
 
     override fun hashCode(): Int =
-        toInt()
+        if (this) 1231 else 1237
 
     @kotlin.internal.IntrinsicConstEvaluation
     override fun equals(other: Any?): Boolean {

libraries/stdlib/wasm/internal/kotlin/wasm/internal/ExternalWrapper.kt

@@ -79,7 +79,7 @@ return (obj) => {
         case "number":
             return numberHashCode(obj);
         case "boolean":
-            return obj;
+            return obj ? 1231 : 1237;
         default:
             return getStringHashCode(String(obj)); 
     }