Example Lambda function that wraps https.request in a promise so it can be used with async/await

promisified-https-request.js

const https = require('https');

exports.handler = async (event) => {
  const response = await asyncHttpRequest({ hostname: 'httpbin.org', path: '/ip' });
  return JSON.parse(response);
};

function asyncHttpRequest(params, postData) {
  return new Promise(function(resolve, reject) {
    const req = https.request(params, function(res) {
      // reject on bad status
      if (res.statusCode < 200 || res.statusCode >= 300) {
        return reject(new Error(`statusCode=${res.statusCode} path=${params.path}`));
      }
      let body = '';
      res.on('data', (chunk) => body += chunk);
      res.on('end', () => resolve(body));
    });
    
    req.on('error', (err) => reject(err));
    if (postData) { req.write(postData) }
    req.end();
  });
}