React + Material UI, require is undefined

I'm trying to use React with Material UI, but I still have the same error: require is not defined. I have this browser error for TapEventPlugin, TouchEventPlugin, injectTapEventPlugin and ResponderEventPlugin.

This is the code in my index.html: `

    <div id="wrapper">
    </div>

    <script src="js/react.min.js"></script>
    <script src="js/JSXTransformer.js"></script>
    <script src="js/TapEventPlugin.js"></script>
    <script src="js/TouchEventUtils.js"></script>
    <script src="js/injectTapEventPlugin.js"></script>
    <script src="js/ResponderEventPlugin.js"></script>
    <script type="text/jsx" src="js/index.js"></script>
</body>`

      

        
        
        
      

    

And this is my js file:

var React = require('react/addons');
var injectTapEventPlugin = require('react-tap-event-plugin');
injectTapEventPlugin();
var mui = require('material-ui');
var ThemeManager = new mui.Styles.ThemeManager();
var AppBar = mui.AppBar;

var ApplicationBar = React.createClass({
            render: function(){
                return <AppBar title='Title' iconClassNameRight="muidocs-icon-navigation-expand-more"/>;
            }
        });

React.render(
    <ApplicationBar />,
    document.getElementById('wrapper')
  );
      

        
        
        
      

    

Any idea?