Reducer

Reducer.js

import dotprop from 'dot-prop-immutable';
import {
  UPDATE_POST_TITLE,
  LOAD_APP
} from './../constants/actionTypes';


export default (state = {}, action) => {
  switch (action.type) {
    case LOAD_APP:
      return action.payload
    case UPDATE_POST_TITLE:
      const nextState = dotprop.set(state, `posts.${action.payload.id}.title`, 'The title has been updated');
      return nextState;
    default:
      return state;
  }
};