title: How to use System.import() correctly?
body: <p>I use the <code>jspm</code> in my project.</p>
  
  <p>But I need the server side nodejs file to execute some instruction.</p>
  
  <p>For example, I need to use the <code>lodash</code> and found the guide in the <a href="https://github.com/systemjs/systemjs" rel="nofollow">https://github.com/systemjs/systemjs</a></p>
  
  <pre><code>var System = require('jspm').Loader();
  System.import('lodash').then(function (_) {  console.log(_); });
  </code></pre>
  
  <p>However, I want to use the lodash globally.
  Just like</p>
  
  <pre><code>var _ = System.import('lodash');
  var myArr = _.map([1, 2, 3], function(n) { return n * 3; });
  </code></pre>
  
  <p>It will show </p>
  
  <blockquote>
    <p>TypeError: _.map is not a function
        at Object. (/Users/joyfeel/javascript/jspm-test/index.js:49:16)
        at Module._compile (module.js:435:26)
        at normalLoader (/usr/local/lib/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:199:5)
        at Object.require.extensions.(anonymous function) [as .js] (/usr/local/lib/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:216:7)
        at Module.load (module.js:356:32)
        at Function.Module._load (module.js:311:12)
        at Function.Module.runMain (module.js:467:10)
        at Object. (/usr/local/lib/node_modules/babel/lib/_babel-node.js:144:25)
        at Module._compile (module.js:435:26)
        at Object.Module._extensions..js (module.js:442:10)</p>
  </blockquote>
  
  <p>Why does the <code>lodash</code> only be used in <code>.then</code> scope?</p>
  
  <p>Could anyone tell me how to figure it out? Suppose we want to <code>System.import</code> other modules and use it? </p>