Local storage for translations / locales

Translation.js

import {EventEmitter} from 'fbemitter';

const CHANGE_EVENT = 'change';

export default class Translation extends EventEmitter {

  constructor(eventEmitter = null, storage = null) {
    super();
    this.eventEmitter = eventEmitter || new EventEmitter();
    this.localeStorage = storage || localStorage;
  }

  saveLocale(locale = 'de') {
    this.localeStorage.setItem('vsm.locale', locale);
    this.eventEmitter.emit(CHANGE_EVENT);
  }

  locale() {
    return this.localeStorage.getItem('vsm.locale')
  }

  addListener(eventType, func) {
    this.eventEmitter.addListener(eventType, func);
  }
}