Replicate JS SDK hanging

index.js

const aws = require ('aws-sdk');

async function test() {
  const s3 = new aws.S3({
    apiVersion: '2006-03-01',
    signatureVersion: 'v4',
    httpOptions: {
      connectionTimeout: 1000,
      timeout: 1000
    },
    region: 'ap-southeast-2',
    maxRetries: 3
  })
  return s3.listBuckets().promise();
}

test().then(function(f) { console.log(f) }).catch(function(e) { console.log(e.stack) });