rudex-middleware-es5.js

/**
 * Logs all actions and states after they are dispatched.
 */
const logger = function(store) {
  return function(next) {
    return function(action) {
      console.group(action.type)
      console.info('dispatching', action)
      
      let result = next(action)
      
      console.log('next state', store.getState())
      console.groupEnd(action.type)

      return result
    }
  }
}