text: import { FETCH_POSTS, FETCH_POST, DELETE_POST } from '../actions/index'
  import _ from 'lodash'
  
  export default function(state = {}, action) {
    switch(action.type) {
      case DELETE_POST:
        return _.omit(state, action.payload)
      case FETCH_POST:
        // const post = action.payload.data
        // const newState = { ...state  };
        // newState[post.id] = post
        // return newState
        return { ...state, [action.payload.data.id]: action.payload.data }
      case FETCH_POSTS:
        return _.mapKeys(action.payload.data, 'id')
      default:
        return state;
    }
  }