Why does rollup treat my code as "external dependency"?
<p>I'm learning to use <a href="http://rollupjs.org" rel="nofollow">Rollup</a> in <a href="https://github.com/akauppi/jspm-trial/tree/rollup" rel="nofollow">this project</a>.</p>

<p>When doing:</p>

<pre><code>$ npm run rollup

&gt; @ rollup /Users/akauppi/Source/jspm-trial
&gt; rollup -c rollup.config.js --output out/bundle.js --sourcemap true

Treating 'some' as external dependency
</code></pre>

<p>My output only has the entry point, not the files imported from it. Why would that be?</p>

<pre><code>$ more dist/bundle.js
'use strict';

var some = require('some');

console.log(some.some); // 42
</code></pre>

<p>Details are available in the repo (link above). </p>