how to check if the Flow is empty?

Question

I am passing data to render the list as a Flow<>. If it is empty, instead of the list, I need to display the inscription "No data". How can I set a condition to check if the flow is empty?

@Composable
fun HistoryLayout(viewModel: HistoryViewModel = viewModel()) {
    val historyFlow = viewModel.historyStateFlow.collectAsLifecycleState().value
    if (is historyFlow empty???) {
        Box(
            modifier = Modifier.fillMaxSize(),
            contentAlignment = Alignment.Center
        ) {
            Text(
                stringResource(R.string.emptylist),
                textAlign = TextAlign.Center,
                maxLines = MAX_LINES,
                overflow = TextOverflow.Ellipsis,
            )
        }

    } else {
        HistoryTableList(historyFlow = historyFlow)
    }
}

Answer 1

This trick helped me solve the problem, however i hope to still find a better solution From Flow i get LazyPagingItems<...>, which has *.itemCount method.

@Composable
fun HistoryLayout(viewModel: HistoryViewModel = viewModel()) {
    val historyFlow = viewModel.historyStateFlow.collectAsLifecycleState().value
    val historyItems: LazyPagingItems<HistoryRecordEntity> = historyFlow.collectAsLazyPagingItems()

    if (historyItems.itemCount == 0) {
        Box(
            modifier = Modifier.fillMaxSize(),
            contentAlignment = Alignment.Center
        ) {
            Text(
                stringResource(R.string.emptylist),
                textAlign = TextAlign.Center,
                maxLines = MAX_LINES,
                overflow = TextOverflow.Ellipsis,
            )
        }
    } else {
        HistoryTableList()
    }
}