4.js

import Request from 'superagent';

export function getIssues() {
  const request = Request
    .get('http://issues.com/issues')
  return (dispatch) => {
    request.end((err, res) => {
      if (res.ok) 
        dispatch({
          type: 'GET_ISSUES',
          payload: res.body.issues
        });
    });
  }
}