I’m confused and a little worried about how this code is handled in JavaScript:

condition: boolean = setCondition();
if (condition){
  await doAsyncStuff();
}
doFinalStuff();

If await is just syntactic sugar for doAsyncStuff().then(doFinalStuff()) how is the above code handled?
Something like:

if (condition){
  doAsyncStuff().then(doFinalStuff());
} else {
  doFinalStuff();
}

Seems less elegant than what I would have expected from JavaScript. is my code wrong? Does it not perform as expected? How would I fix it?