Using async-await to iterate Promises

async-loop.js

async function waitAndPrint(toPrint) {
  await new Promise((resolve, reject) => {
    setTimeout(() => {
      console.log(toPrint);
      resolve();
    }, Math.random() * 1000);
  });
}

const arrayOfNumbers = [1, 2, 3, 4];

async function forEachAsync(array, func) {
  for (const item of array) {
    await func(item);
  }
}

forEachAsync(arrayOfNumbers, async (num) => {
  await waitAndPrint(num)
});

console.log('hello !');

// hello !
// 1
// 2
// 3
// 4