Require JPM not define all JS
<p>I am currently developing a firefox extension with jpm.when I make an <code>jpm init</code>  I have a js file <code>index.js</code>. In this file I can include different sdk with <code>require</code> for example <code>var system = require("sdk/system");</code>
The problem is that if I have another js file I attach to my tab, I go well at my job but worries if I want to include an SDK in the file I get an error </p>

<blockquote>
  <p>Require is no defined</p>
</blockquote>

<p><code>Require</code> only works in index.js file. How to access a sdk in different js file? Because I want to use the sdk <code>sdk/request</code> to query xmlHttpRequest</p>