code: function getBootstrapNode() {
  	// Use the cache if already found.
  	if (cache) {
  		return cache;
  	}
  
  	// Get the debug object.
  	var Debug = require('vm').runInDebugContext('Debug');
  
  	// Use the debug object to list all of the scripts.
  	// It is only possible to get the scripts is a listener is set.
  	// However, we do not want to replace any existing listeners.
  	// First try to get the scripts without setting a litener.
  	// If it fails, then there must be not be any listener set.
  	// Set listener temporarily, get the scripts, and unset.
  	var scripts;
  	try {
  		scripts = Debug.scripts();
  	}
  	catch (ex) {
  		Debug.setListener(function() {});
  		scripts = Debug.scripts();
  		Debug.setListener(null);
  	}
  
  	// Now find the script in whole the list.
  	for (var i = scripts.length; i--;) {
  		var script = scripts[i];
  		var name = script.name;
  
  		// Check the script name, ignore if not a known name.
  		if (
  			name !== 'bootstrap_node.js' &&
  			name !== 'node.js'
  		) {
  			continue;
  		}
  
  		// Get the script source.
  		var source = script.source;
  
  		// Get the body of the code.
  		var body = source
  			.replace(trimHeader, '')
  			.replace(trimFooter, '');
  
  		// Check if the body matches and cache it.
  		if (matchBody.test(body)) {
  			cache = source;
  			break;
  		}
  	}
  
  	// Throw if not found.
  	if (!cache) {
  		throw new Error('Node bootstrap script was not found.');
  	}
  
  	return cache;
  }
docs: Get the Node bootstrap script source.
  
  @throws Error - If script not found.
  @returns {string} - Script source.