This example demonstrates a function that makes an HTTP request and uses async/await to handle the function it calls that returns a promise.

asyncAwaitHttpExample.js

const request = require('request');

// request doesn't return a Promise, so it needs to be wrapped in a function
// that does for this example
function getRequest(url, qs = {}) {
  return new Promise((resolve) => {
    request
      .get({ url, qs })
      .on('response', (response) => {
        response.on('data', (data) => {
          // resolve with the response's data Buffer
          resolve(data);
        });
      });
  });
}

// this is our async function. it implicitly returns a promise. callers can access
// its return value in .then().
async function getWeather(zipCode) {
  let response;

  try {
    // calling makeRequest with await makes the code act synchronously
    response = await getRequest(
      'http://api.openweathermap.org/data/2.5/weather',
      {
        zip: `${zipCode},us`,
        APPID: '69c0fd4bcd581a42b5628422b46cc299',
      }
    );
  } catch (err) {
    console.log(err);
  }

  return response.toString();
}

// call the async function and log its return value
getWeather('06854').then(console.log);