keyboardAsState without leak

@Composable
fun keyboardAsState(): State<KeyboardState> {
    val keyboardState = remember { mutableStateOf(KeyboardState.Closed) }
    val view = LocalView.current

    val viewTreeObserver = view.viewTreeObserver

    DisposableEffect(viewTreeObserver) {
        val onGlobalListener = ViewTreeObserver.OnGlobalLayoutListener {
            val rect = Rect()
            view.getWindowVisibleDisplayFrame(rect)
            val screenHeight = view.rootView.height
            val keypadHeight = screenHeight - rect.bottom
            keyboardState.value = if (keypadHeight > screenHeight * 0.15) {
                KeyboardState.Opened
            } else {
                KeyboardState.Closed
            }
        }
        viewTreeObserver.addOnGlobalLayoutListener(onGlobalListener)

        onDispose {
            viewTreeObserver.removeOnGlobalLayoutListener(onGlobalListener)
        }
    }

    return keyboardState
}