Tweetbot example using Nightmare

tweet-bot-using-nightmare.js

// TODO: Change your username/password:
const TW_USER = "<YOUR_USERNAME>";
const TW_PASS = "<YOUR_PASSWORD>";

var Nightmare = require('nightmare');
var nightmare = Nightmare({ show: true });

nightmare
  .goto('https://twitter.com/login/')
  .insert('.js-username-field.email-input.js-initial-focus[name="session[username_or_email]"]', TW_USER)
  .insert(".js-password-field[name='session[password]']", TW_PASS)
  .click('#page-container > div > div.signin-wrapper > form > div.clearfix > button')
  .wait(2000)
  .goto("https://twitter.com/settings/account")
  .evaluate(function() {
    return document.querySelector('#username_fieldset > div > p:nth-child(3)').innerText;
  })
  // open the tweet panel
  .click("#global-new-tweet-button > span.Icon.Icon--tweet.Icon--large") 
  // tweets "hello"
  .type('#tweet-box-global', 'hello')
  // click to send
  .click("#global-tweet-dialog-dialog > div.modal-content > div.modal-tweet-form-container > form > div.TweetBoxToolbar > div.TweetBoxToolbar-tweetButton.tweet-button > button > span.button-text.tweeting-text")
  .end()
  .then(function(result) {
    console.log(result);
  })
  .catch(function(error) {
    console.error('Search failed:', error);
  });