Understanding javascript async-await

async.js

(async () => {
  console.log(1);
  console.log(await 2);
  console.log(3);
})();
(async () => {
  console.log('a');
  console.log(await 'b');
  console.log('c');
})();

console.log(4)
/*
1
"a"
4
2
3
"b"
"c"
*/