ES7+ Async Flow (async await) *syntactic sugar

1async function createGameFlow(cb){
2  try {
3    const game = await createGame();
4    const environment = await selectEnvironment(game);
5    game.environment = environment;
6    await saveGame(game);
7    return cb(undefined, game);
8  } catch (ex) {
9    return cb(ex);
10  }
11}
12
13async function createGame(){
14  return new Promise((res) => {
15    console.log("Creating game...");
16    setTimeout(() => {
17      return res({title: "Casino Poker Game"});
18    }, 500);
19  });
20}
21
22async function selectEnvironment(game){
23  return new Promise((res) => {
24    console.log("Selecting game environment...");
25    setTimeout(() => {
26      return res({environemnt: "ios, android"});
27    }, 500);
28  });
29}
30
31async function saveGame(employee){
32  return new Promise((res) => {
33    console.log("Saving game to DB...");
34    setTimeout(() => {
35      return res();
36    }, 500);
37  });
38}
39
40createGameFlow((err, game) => {
41  if(err) {
42      console.error('error', err);
43  } else{
44      console.log('Game Created and Saved', game);
45  }
46  console.log('exiting..');
47  process.exit();
48});