title: Can not find module webpage using PhantomJS
body: <p>I am using PhantomJS to search for words on a web page, I tried to set it up like:</p>
  
  <pre><code>const phantomjs = require("phantomjs-prebuilt");
  
  if (cmd === `${prefix}check`) {
      let word = (args[0]);
      var page = require('webpage').create();
      page.open('https://discordapp.com/channels/000/000', function(err, data) {
          if (err) throw err;
          if (data.indexOf(word) &gt;= 0) {
              message.reply(word+ ' Found!');
          } else {
              message.reply(word+ ' Not found.');
          }
      });
  }
  </code></pre>
  
  <p>However I'm getting the following error:</p>
  
  <blockquote>
    <p>(node:3520) UnhandledPromiseRejectionWarning: Error: Cannot find
    module 'webpage'</p>
  </blockquote>
  
  <p>What is causing this?</p>
  
  <p><strong>Edit</strong>
  I just saw that it does not work with Node JS, is it possible to call the seperate JS file and pass the <code>(args[0]);</code>?</p>