// IGNORE_BACKEND: JS, JS_IR, WASM

// boxed primitive comparisons
fun isBoolean(a: Any) = a::class == true::class
fun isChar(a: Any) = a::class == 'c'::class
fun isByte(a: Any) = Byte::class == a::class
fun isShort(a: Any) = 1.toShort()::class == a::class
fun isInt(a: Any) = a::class == (40 + 2)::class
fun isLong(a: Any) = a::class == 0L::class
fun isFloat(a: Any) = a::class == 1.4f::class
fun isDouble(a: Any) = a::class == 0.0::class

// reified primitive comparisons
inline fun <reified T> isReifiedInt() = 1::class == T::class

fun box(): String {
    if (!isBoolean(true)) return "Fail 1"
    if (isBoolean(0)) return "Fail 2"
    if (!isChar('c')) return "Fail 3"
    if (isChar(0)) return "Fail 4"
    if (!isByte(0.toByte())) return "Fail 5"
    if (isByte(0)) return "Fail 6"
    if (!isShort(0.toShort())) return "Fail 7"
    if (isShort(0)) return "Fail 8"
    if (!isInt(0)) return "Fail 9"
    if (isInt("")) return "Fail 10"
    if (!isLong(0L)) return "Fail 11"
    if (isLong(0.0)) return "Fail 12"
    if (!isFloat(10.0f)) return "Fail 13"
    if (isFloat("")) return "Fail 14"
    if (!isDouble(1.0)) return "Fail 15"
    if (isDouble(0)) return "Fail 16"

    if (!isReifiedInt<Int>()) return "Fail 17"
    if (isReifiedInt<Any>()) return "Fail 18"

    if (1::class != Int::class) return "Fail 19"
    if ('c'::class == ""::class) return "Fail 20"

    return "OK"
}