typealias Arena = Int

object ArenaManager

open class JsArray : JsValue

open class JsValue

typealias KtFunction<R> = (ArrayList<JsValue>) -> R

typealias Object = Int

typealias Pointer = Int

const val upperWord: Long

fun allocateArena(): Arena

fun doubleLower(value: Double): Int

fun doubleUpper(value: Double): Int

fun freeArena(arena: Arena)

fun getInt(
    arena: Arena, 
    obj: Object, 
    propertyPtr: Pointer, 
    propertyLen: Int
): Int

fun Konan_js_getProperty(
    arena: Arena, 
    obj: Object, 
    propertyPtr: Pointer, 
    propertyLen: Int
): Int

fun pushIntToArena(arena: Arena, value: Int)

fun ReturnSlot_getDouble(): Double

fun runLambda(
    pointer: Int, 
    argumentsArena: Arena, 
    argumentsArenaSize: Int
): Int

fun setFunction(
    arena: Arena, 
    obj: Object, 
    propertyName: Pointer, 
    propertyLength: Int, 
    function: Int)

fun setString(
    arena: Arena, 
    obj: Object, 
    propertyName: Pointer, 
    propertyLength: Int, 
    stringPtr: Pointer, 
    stringLength: Int)

fun setter(obj: JsValue, property: String, string: String)

fun setter(
    obj: JsValue, 
    property: String, 
    lambda: KtFunction<Unit>)

fun stringLengthBytes(message: String): Int

fun stringPointer(message: String): Pointer

fun <R> wrapFunction(func: KtFunction<R>): Int