old_contents: 'use strict';
  
  var React = require('react'),
      Router = require('react-router'),
      runRouter = require('./runRouter')
  
  // Client side rendering
  var renderPage = function(Handler, data) {
      React.render(React.createElement(Handler, {data: cleanData(data)}), document)
  }
  
  module.exports = function(routes) {
      runRouter(routes, Router.HistoryLocation, function(Handler, data) {
          renderPage(Handler, data)
      })
  }
  
new_contents: 'use strict';
  
  var React = require('react'),
      Router = require('react-router'),
      runRouter = require('./runRouter')
  
  // Client side rendering
  var renderPage = function(Handler, data) {
      React.render(React.createElement(Handler, {data: data}), document)
  }
  
  module.exports = function(routes) {
      runRouter(routes, Router.HistoryLocation, function(Handler, data) {
          renderPage(Handler, data)
      })
  }
  
subject: Fix cleanData