Stores in Flux with Rx refactored.js

import ACTION_CONSTANTS from '../../constant/action-constants';
import Rx from 'rx';

class SomeStore {
  constructor(dispatcher) {
    'ngInject';
    
    this.dispatcher = dispatcher;
    this.someStore$ = this.registerActionHandlers();
  }
  
  registerActionHandlers() {
    return this.dispatcher
      .filter((action) => action === ACTION_CONSTANTS.SOME_ACTION)
      .scan((someState, action) => !someState, false);
  }
}

export default SomeStore;