async await

async-await.js

const delay = (data) => new Promise((resolve) => setTimeout(resolve.bind(null, data), 100))
const delayFail = (data) => new Promise((resolve, reject) => setTimeout(reject.bind(null, data), 100))

const asyncFunc = async (x = 0) => {
  console.log(await delay(x + 22));
  
  console.log(await delay(x + 21));
  
  console.log(await delayFail(x + 20));
  
  return 11;
}

const asyncAwait = async (func, ...args) => {
  try {
    const response = await func(...args);
    return {response, error: null}
  } catch (err) {
    return {response: null, error: err}
  }
}

const runner = async () => {
  const {response, error} = await asyncAwait(asyncFunc, 1);
  
  console.log(response);
  console.error(error)
}
runner();