Require files relative to your project root.

npm install --save rootrequire

var
  root = require('rootrequire'),
  myLib = require(root + '/path/to/lib.js');

• You can move files around more easily than you can with relative paths like ../../lib/my-lib.js
• Every file documents your app's directory structure for you. You'll know exactly where to look for things.
• Dazzle your coworkers.

This was written for the "Learn JavaScript with Eric Elliott" courses. Don't just learn JavaScript. Learn how to change the world.