title: What's the difference between requiring ts-node and ts-node/register
body: <p>I'm doing some e2e tests for an angular app using protractor and typescript. During the setup i found out that i have to use:</p>
  
  <p>require("ts-node/register")</p>
  
  <p>Since I'm new to node.js I'm wondering why the "/register" is needed here and why i can't just use require("ts-node")?</p>