text: import {
    AUTH_USER,
    UNAUTH_USER
  } from '../actions/types';
  
  export default function(state = {}, action) {
    switch (action.type) {
      case AUTH_USER:
        return { ...state, authenticated: true };
      case UNAUTH_USER:
        return { ...state, authenticated: false };
      case AUTH_ERROR:
        return { ...state, error: action.payload };
    }
    return state;
  }
  