[NodeJS] Evaluate a URL to get it's domain and port, HTTP(s) only

find-domain-and-port.js

'use strict'

const url = require('url')

function getUrl (dataUrl) {
  if (dataUrl.split('://').length === 1 || dataUrl.startsWith('://')) {
    dataUrl = `http://${dataUrl.replace('://', '')}`
  }
  return dataUrl
}

let findUrlKey = (rawUrl) => {
  rawUrl = getUrl(rawUrl)

  let inputUrl = url.parse(rawUrl)
    , domain = inputUrl.hostname || inputUrl.pathname.split('/')[0]
    , protocol = inputUrl.protocol || 'http'
    , port = inputUrl.port || (protocol.indexOf('https') > -1 ? '443' : '80')

  return domain + ':' + port
}

module.exports = findUrlKey

find-domain-and-port.test.js

const assert = require('assert')
    , findUrlKey = require('../lib/find-url-key')
    , fixtures =
      [ { url: 'http://google.com', result: 'google.com:80' }
      , { url: 'https://google.com', result: 'google.com:443' }
      , { url: 'https://google.com:3000', result: 'google.com:3000' }
      , { url: 'http://google.com:3000', result: 'google.com:3000' }
      , { url: 'http://google.com:3000/path', result: 'google.com:3000' }
      , { url: 'http://google.com:3000', result: 'google.com:3000' }
      , { url: 'google.com', result: 'google.com:80' }
      , { url: 'google.com/path', result: 'google.com:80' }
      , { url: 'google.com:3000/path', result: 'google.com:3000' }
      , { url: 'google.com:3000', result: 'google.com:3000' }
      , { url: '://google.com:3000', result: 'google.com:3000' }
      , { url: '://google.com', result: 'google.com:80' }
      , { url: 'ftp://google.com:3000', result: 'google.com:3000' }
      , { url: 'ftp://google.com', result: 'google.com:80' }
      , { url: 'ftp://google.com:3000/a/bunch?=of werid+stuff#to-see\/ifi:tb.reaks', result: 'google.com:3000' }
      , { url: 'google.com/a/bunch?=of werid+stuff#to-see\/ifi:tb.reaks', result: 'google.com:80' }
      ]

describe('Test URL parsing logic', () => {
  fixtures.forEach((fixture) => {
    it('should return: ' + JSON.stringify(fixture.result), (done) => {
      assert.deepEqual(findUrlKey(fixture.url), fixture.result, 'wrong domain or port found')
      done()
    })
  })
})