text: if (typeof Promise === 'undefined')
    require('when/es6-shim/Promise');
  
  var version = require('./package.json').version;
  
  var isWindows = typeof process.platform != 'undefined' && process.platform.match(/^win/);
  
  // set transpiler paths in Node
  var nodeResolver = typeof process != 'undefined' && typeof require != 'undefined' && require.resolve;
  function configNodePath(loader, module, nodeModule, wildcard) {
    if (loader.paths[module])
      return;
  
    var ext = wildcard ? '/package.json' : '';
    try {
      var match = nodeResolver(nodeModule + ext).replace(/\\/g, '/');
    }
    catch(e) {}
    
    if (match)
      loader.paths[module] = 'file://' + (isWindows ? '/' : '') + match.substr(0, match.length - ext.length) + (wildcard ? '/*.js' : '');
  }
  
  var SystemJSLoader = require('./dist/system.src').constructor;
  
  // standard class extend SystemJSLoader to SystemJSNodeLoader
  function SystemJSNodeLoader() {
    SystemJSLoader.call(this);
  
    if (nodeResolver) {
      configNodePath(this, 'traceur', 'traceur/bin/traceur.js');
      configNodePath(this, 'traceur-runtime', 'traceur/bin/traceur-runtime.js');
      configNodePath(this, 'babel', 'babel-core/browser.js');
      configNodePath(this, 'babel/external-helpers', 'babel-core/external-helpers.js');
      configNodePath(this, 'babel-runtime/*', 'babel-runtime', true);
    }
  }
  SystemJSNodeLoader.prototype = Object.create(SystemJSLoader.prototype);
  SystemJSNodeLoader.prototype.constructor = SystemJSNodeLoader;
  
  var System = new SystemJSNodeLoader();
  
  System.version = version + ' Node';
  
  if (typeof global != 'undefined')
    global.System = global.SystemJS = System;
  
  module.exports = System;
  