Tim-Zhang

const aws4 = require('hyper-aws4')
const https = require('https')
const credential = require('./credential')

const createError = (status, message) => {
  const error = new Error(message)
  error.status = status
  return error
}

Tim-Zhang

import _            from 'lodash'
import crypto       from 'crypto'
import urllib       from 'url'
import querystring  from 'querystring'

const SignedHeaders     = 'content-type;host;x-hyper-content-sha256;x-hyper-date'
const HeaderContentHash = 'X-Hyper-Content-Sha256'
const Algorithm         = 'HYPER-HMAC-SHA256'
const Region            = 'us-west-1'
const Service           = 'hyper'