title: Simply `@require`-ing a 3rd party library results in javascript errors?
body: <p>I'm trying to create a userscript that runs <a href="https://github.com/Rio6/Istrolid-js-ai" rel="nofollow noreferrer">another person's Istrolid AI library</a>. But when I run it, I get:</p>
  
  <blockquote>
    <p>ERROR: Execution of script 'New Userscript' failed! Interpolator is
    not defined</p>
  </blockquote>
  
  <p>My userscript looks like this:</p>
  
  <pre><code>// ==UserScript==
  // @name         New Userscript
  // @namespace    http://tampermonkey.net/
  // @version      0.1
  // @description  try to take over the world!
  // @author       You
  // @match        www.istrolid.com
  // @grant        none
  // @require      https://rawgit.com/Rio6/Istrolid-js-ai/master/r26Ai.js
  // ==/UserScript==
  
  console.log(r26Ai);
  </code></pre>