IO bound task.dart

void main() async {
  var tweetId = 12345;
  // Get tweet details by tweet Id 
  final networkData = await fetchTweetById(tweetId);
  final jsonData = jsonDecode(networkData);
}

Future<Tweet> fetchTweetById(int tweetId) async {
  final url = Uri.parse("www.twitter.com" + "/$tweetId");
  final response = await http.get(url);
}