Non-working lazy-load redux action. The reason it doesn't work is because webpack cannot resolve dynamic paths (without assistance). Makes sense to create a loader like `react-proxy-loader` that will generate this. Then you can stick this in middleware and be done.

lazy-load-redux-action.js

/**
 * Module Dependencies
 */

var relative = require('path').relative

/**
 * Action
 */

export const LAZY_LOAD_REQUEST = 'LAZY_LOAD_REQUEST'
export const LAZY_LOAD_RECEIVE = 'LAZY_LOAD_RECEIVE'
export const LAZY_LOAD_FAILURE = 'LAZY_LOAD_FAILURE'

export function load (path) {
  path = './' + relative(__dirname, path)
  return function (dispatch, getState) {
    var state = getState()
    if (state.modules[path]) return
    dispatch(lazy_load_request(path))

    require.ensure([], function (require) {
      var mod = null
      var err = null

      try {
        mod = require(path)
      } catch (e) {
        err = e
      }

      if (err) dispatch(lazy_load_failure(err, path))
      else dispatch(lazy_load_receive(path, mod))
    })
  }
}

function lazy_load_request (path) {
  return {
    type: LAZY_LOAD_REQUEST,
    path: path
  }
}

function lazy_load_receive (path, mod) {
  return {
    type: LAZY_LOAD_RECEIVE,
    module: mod,
    path: path
  }
}

function lazy_load_failure (err, path) {
  return {
    type: LAZY_LOAD_FAILURE,
    error: err,
    path: path
  }
}