title: How do I call up another JavaScript file from one main file?
body: <p>I am creating a bot for Discord using the discord.js library. I'm trying to create a file so that when I execute it, it loads up each module without me having to run <code>node file.js</code> multiple times over. The file, which we shall call <code>startup.js</code>, is located in the modules folder. Let's say I want to load <code>File1.js</code>, <code>File2.js</code>, and <code>File3.js</code> which is in <code>Bot/modules/diagnostics</code>, while startup.js is in <code>Bot/modules</code>. I want the files to be loaded asynchronously, and the order is not important.</p>
  
  <p>All help is appreciated.</p>