title: How to use 'crypto' module in Angular2?
body: <p>I install module:</p>
  
  <pre><code>npm install --save crypto
  </code></pre>
  
  <p>I import it to my component:</p>
  
  <pre><code>import { createHmac } from "crypto";
  </code></pre>
  
  <p>But I get error:</p>
  
  <blockquote>
    <p>ERROR in -------------- (4,28): Canno
    t find module 'crypto'.</p>
  </blockquote>
  
  <p>What am I doing wrong?</p>