Guestar

BaseStore.js

import _ from 'lodash';
import {EventEmitter} from 'events';

const CHANGE_EVENT = 'change';

const BaseStore = _.assign({}, EventEmitter.prototype, {

  emitChange() {
    this.emit(CHANGE_EVENT);
  },

  addChangeListener(callback) {
    this.on(CHANGE_EVENT, callback);
  },

  removeChangeListener(callback) {
    this.removeListener(CHANGE_EVENT, callback);
  }

});

export default BaseStore;

WelcomeStore.js

import _ from 'lodash';

import AppDispatcher from '../dispatcher/AppDispatcher';
import WelcomeConstants  from '../constants/WelcomeConstants';
import BaseStore from './BaseStore';

const _state = {
  message: 'Welcome to React Native'
};

const _setStateMessage = message => _state.message = message;

const WelcomeStore = _.assign({}, BaseStore, {

  getMessage() {
    return _state.message;
  }

});

AppDispatcher.register(action => {

  switch(action.actionType) {
    case WelcomeConstants.SET_WELCOME_MESSAGE:
      _setStateMessage(action.message);
      WelcomeStore.emitChange();
      break;
  }

});

export default WelcomeStore;