Creating website mirrors using node.js

I'm wonder if is possible to create website mirror using node.js ?

I want to download any website then serve "mirror" from my server. I need that because I want to evaluate my JavaScript code. (Inject my appliaction)

Use case:

1. User run my app using node.js


2. 
   

   User go to localhost and see prompt with message "Please provide URL" , user provide url

   
   


3. 
   

   Magic <- I don't know how to do that

   
   


4. 
   

   User seeing cloned website with injected my application on localhost

   
   

example: http://ift.tt/1DVGfia

There is any tool for node.js to do that easly ?