Creating JSON request browser with Tobi

file1.js

var tobi = require('tobi'),
     browser = tobi.createBrowser(8000, "localhost");

json_browser = (function(){
  var json_header = {headers: 
    {
    "Accept": "application/json",
    "X-Requested-With": "XMLHttpRequest"
    }
  };
  var json_method = function(method){
    return function(path, options, callback){
      if(!callback) {
        callback = options;
        options = {};
      }
      browser[method](path, _.defaults(options, json_header), callback);
    };
  };
  return {
    get: json_method('get'),
    post: json_method('post'),
    put: json_method('put'),
    delete: json_method('delete')
  };
}());