let m = $maps.mapOf($maps.pairOf(1, "A"), $maps.pairOf(2, "B"))
// 不可变 Map 无法修改
//m.put(3, "C")
//m.put(4, "D")
//m.put(5, "E")
$objectWrappers.wrap(m).forEach((it) => {
    $console.log(it)
})