Added linkedlist dep.

Author: pluma

package.json

@@ -62,6 +62,7 @@
     "watch": "^0.16.0"
   },
   "dependencies": {
-    "extend": "^2.0.1"
+    "extend": "^2.0.1",
+    "linkedlist": "^1.0.1"
   }
 }

src/util/request.js

@@ -3,6 +3,7 @@ var http = require('http');
 var parseUrl = require('url').parse;
 var once = require('./once');
 var joinPath = require('path').join;
+var LinkedList = require('linkedlist');
 
 function rawCopy(obj) {
   var data = {};
@@ -17,7 +18,7 @@ function rawCopy(obj) {
 module.exports = function (baseUrl, agent, agentOptions) {
   if (!agent && http.Agent) agent = new http.Agent(agentOptions); // server only
 
-  var queue = [];
+  var queue = new LinkedList();
   var maxTasks = typeof agent.maxSockets === 'number' ? agent.maxSockets * 2 : Infinity;
   var activeTasks = 0;
   var baseUrlParts = rawCopy(parseUrl(baseUrl));