actions-soundcloud.js

'use strict';

import request from 'superagent';
import { createAction } from 'redux-actions';
import ActionTypes from '../constants/ActionTypes';
import { SOUNDCLOUD_URL } from '../constants/static';

const fetchMe = (opts) => {
  request.get(`${SOUNDCLOUD_URL}/me`)
    .query(opts)
    .end((err, res) => { me: res.body } };
    } ))
}
export default {
  fetchMe: createAction(ActionTypes.FETCH_ME, fetchMe),
};

ActionTypes.js

'use statics';

export default {
  FETCH_ME: 'FETCH_ME',
  FETCH_LIKES: 'FETCH_LIKES',
  FETCH_TRACKS: 'FETCH_TRACKS',
  FETCH_USER: 'FETCH USER'
};

AudioPlayer.jsx

'use strict';

import React, { Component, PropTypes } from 'react';
import { connect } from 'redux/react';
import SoundcloudActions from '../../actions/soundcloud';

@connect(state => (state))
class AudioPlayerContainer extends Component {
  constructor(props, context) {
    super(props, context);
  };

  componentWillMount() {
    const { dispatch } = this.props;
    
    dispatch(SoundcloudActions.fetchMe({
      client_id: '12345',
      oauth_token: '54321'
    }));
  };

  render() {
    return (
      <div/>
    );
  };
}

export default AudioPlayerContainer;

reducers-soundcloud.js

'use strict';

import { handleAction } from 'redux-actions';
import ActionTypes from '../constants/ActionTypes';

const fetchMe = handleAction(ActionTypes.FETCH_ME, {
  next(state = {}, action) {
    console.log('next');
  },
  throw(state, action) {
    console.log('throw');
  }
});

export default fetchMe;

Root.jsx

'use strict';

import React, { Component, PropTypes } from 'react';
import { Provider } from 'redux/react';
import { createDispatcher, createRedux, composeStores } from 'redux';
import { loggerMiddleware, thunkMiddleware } from '../../middleware';
import reducers from '../../reducers/soundcloud';
import AudioPlayerContainer from '../AudioPlayer';

const dispatcher = createDispatcher(
  composeStores(reducers),
  getState => [ thunkMiddleware(getState), loggerMiddleware ]
);
const redux = createRedux(dispatcher);

class Root extends Component {
  render() {
    return (
      <Provider redux={redux}>
        { () => <AudioPlayerContainer/> }
      </Provider>
    );
  };
}

export default Root;

React.render(<Root/>, document.getElementById('ui-App'));

In the file ActionTypes.js, what is the use of 'use statics';?