Twitter stream using javascript.

streamLoader.js

/*
 * You have to include oauth.js and sha1.js from here http://oauth.googlecode.com/svn/code/javascript/
 * /

var url = "https://userstream.twitter.com/2/user.json";
var accessor = {
  token: "",
  tokenSecret: "",
  consumerKey : "",
  consumerSecret: ""
};

var message = {
  action: url,
  method: "GET",
  parameters: {}
};

OAuth.completeRequest(message, accessor);        
OAuth.SignatureMethod.sign(message, accessor);
url = url + '?' + OAuth.formEncode(message.parameters);

var messageLen = 0;

var xhr = new XMLHttpRequest();
xhr.open('GET', url, true);

xhr.onreadystatechange = function() {
  if(xhr.readyState == 2 && xhr.status == 200) {
     // Connection is ok
  } else if(xhr.readyState == 3){ 
  //Receiving stream
  if (messageLen < xhr.responseText.length){
    alert(messageLen +"-"+ xhr.responseText.length +":"+xhr.responseText.substring(messageLen,xhr.responseText.length));
  }
  messageLen = xhr.responseText.length;						
  }else if(xhr.readyState == 4) {}	  
  // Connection completed
};	
xhr.send();

Disculpa, encontré tu código buscando por todo Internet, hice lo que tu especificas, alli y agregue la dos librerías mas que tu recomiendas. Pero me aparecen estos errores

**Uncaught TypeError: Cannot set property 'setProperties' of undefined

TypeError: Cannot read property 'completeRequest' of undefined**

Quisiera tambien saber como se envian los paremetros aqui

**parameters: {}**

Ojala me pudieras ayudar, gracias.