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Call async from non-async

We have a “regular” function called f. How can you call the async function wait() and use its result inside of f?

async function wait() {
  await new Promise(resolve => setTimeout(resolve, 1000));

  return 10;
}

function f() {
  // ...what should you write here?
  // we need to call async wait() and wait to get 10
  // remember, we can't use "await"
}

P.S. The task is technically very simple, but the question is quite common for developers new to async/await.

That’s the case when knowing how it works inside is helpful.

Just treat async call as promise and attach .then to it:

async function wait() {
  await new Promise(resolve => setTimeout(resolve, 1000));

  return 10;
}

function f() {
  // shows 10 after 1 second
  wait().then(result => alert(result));
}

f();

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