title: Require in Typescript
body: <p>Can someone explain how would this look in TypeScript. Can it be done via imports? </p>
  
  <p><strong>JS:</strong></p>
  
  <pre><code>var casper = require('casper').create({})
  </code></pre>
  
  <p><strong>CoffeeScript:</strong></p>
  
  <pre><code>casper = require("casper").create()
  </code></pre>
  
  <blockquote>
    <p><strong>Visual Studio error:</strong> Error    1   The name ''casper'' does not exist in the current scope</p>
  </blockquote>