Testing a delayed setTimeout using Promise

TestAsyncTimeout.js

const timeoutWithAwait = async () =>
  await setTimeout(() => {
    console.log("[timeoutWithAwait] - timed out");
  }, 500);

const timeoutWithPromise = () =>
  new Promise((resolve) =>
    setTimeout(() => {
      console.log("[timeoutWithPromise] - timed out");
      resolve();
    }, 500)
  );

const testTimeoutWithAwait = async () => {
  console.log("[timeoutWithAwait] - start");
  await timeoutWithAwait();
  console.log("[timeoutWithAwait] - done");
};

const testTimeoutWithPromise = async () => {
  console.log("[timeoutWithPromise] - start");
  await timeoutWithPromise();
  console.log("[timeoutWithPromise] - done");
};


// Test 1
testTimeoutWithAwait();

// Output:
// [timeoutWithAwait] - start
// [timeoutWithAwait] - done
// [timeoutWithAwait] - timed out

// Test 2
testTimeoutWithPromise();

// Output:
// [timeoutWithPromise] - start
// [timeoutWithPromise] - timed out
// [timeoutWithPromise] - done