Node.js DOM parsing with promises

node_working_dom_v1.js

var request = require('request');
var jsdom = require('jsdom');
var promise = require('promise');
var colors = require('colors');
var util = require('util');

function get(url) {
  return new Promise(function (resolve, reject) {
    console.log('>>>'.yellow, 'started', 'get'.cyan, '[', url.yellow, ']');

    request(url, function(err, res, body) {
      if (!err && res.statusCode == 200) {
        console.log('>>>'.yellow, 'done'.green, 'get'.cyan, '[', url.yellow, ']');
        resolve(body);
      }
      else {
        console.log('get error:'.red);
        if (res && res.statusCode)  console.log('  res:' + util.inspect(res.statusCode));
        console.log('  err:' + util.inspect(err));
        console.log('- - - - -'.red);
        reject(err);
      }
    });
  });
}

function buildDOM(body) {
  return new Promise(function (resolve, reject) {
    console.log('>>>'.yellow, 'started', 'buildDOM'.cyan, 'on', body.length, 'bytes');
    jsdom.env(body, ["http://code.jquery.com/jquery.js"], function(err, window) {
        if (typeof(window) === 'undefined') {
          console.log('buildDOM Error'.red + ': ' + util.inspect(err));
          reject(err);
        }
        else {
          console.log('>>>'.yellow, 'done'.green, 'buildDOM'.cyan);
          resolve(window.$);
        }
      }
    );
  });
}

function parse($) {
  return new Promise(function (resolve, reject) {
    console.log('>>>'.yellow, 'started', 'parse'.cyan);
    try {
      var result = $('input[name="btnI"]');
      console.log('>>>'.yellow, 'done'.green, 'parse'.cyan);
      resolve(result.attr('value'));
    }
    catch (ex) {
      console.log('Parse Error'.red, util.inspect(err));
      reject(ex);
    }
  });
}

function log(x) {
  console.log('>>>'.yellow, 'started', 'logging'.cyan);
  console.log('[',x,']');
  console.log('>>>'.yellow, 'done'.green, 'logging'.cyan);
}

get('http://www.google.com').then(buildDOM).then(parse).then(log);

node_working_dom_v2.js

const request = require('request');
const jsdom = require("jsdom");
const { JSDOM } = jsdom;
const jquery = require('jquery');
const util = require('util');

function get(url) {
  return new Promise(function (resolve, reject) {
    console.log('>>>', 'started', 'get', '[', url, ']');

    request(url, function(err, res, body) {
      if (!err && res.statusCode == 200) {
        console.log('>>>', 'done', 'get', '[', url, ']');
        resolve(body);
      }
      else {
        console.log('get error:');
        if (res && res.statusCode)  console.log('  res:' + util.inspect(res.statusCode));
        console.log('  err:' + util.inspect(err));
        console.log('- - - - -');
        reject(err);
      }
    });
  });
}

function buildDOM(body) {
  return new Promise(function (resolve, reject) {
    console.log('>>> started buildDOM on', body.length, 'bytes');
    var dom = new JSDOM(body);
    var $ = jquery(dom.window);
    console.log('>>>', 'done', 'buildDOM');
    resolve($);
  });
}

function parse($) {
  return new Promise(function (resolve, reject) {
    console.log('>>>', 'started', 'parse');
    try {
      var result = $('input[name="btnI"]');
      console.log('>>>', 'done', 'parse');
      resolve(result.attr('value'));
    }
    catch (ex) {
      console.log('Parse Error', util.inspect(err));
      reject(ex);
    }
  });
}

function log(x) {
  console.log('>>>', 'started', 'logging');
  console.log('[',x,']');
  console.log('>>>', 'done', 'logging');
}

get('http://www.google.com').then(buildDOM).then(parse).then(log);