navigation-animation-1.kt

// Consider destinations First, Second, Third
@Composable
fun Main() {
    ...
    AnimatedNavHost(navController = rememberNavController(), startDestination = "") {
        composable(
            route = "First",
            enterTransition = {
                when(initialState.destination.route) {
                  "Second" -> fadeIn() + slideIn(initialOffset = { IntOffset(-it.width, 0) })
                  else -> fadeIn()
                }
            },
            exitTransition = { fadeOut() + slideOut(targetOffset = { IntOffset(-it.width, 0)}) }
        ) {
            // content...
        }
        composable(
            route = "Second",
            ...
        )
        composable(
            route = "Third",
            ...
        )
}