Модуль-класс с реализацией методов взаимодействия с локальным хранилищем (localStorage)

local-storage-class.js

const localStorage = window.localStorage || {};

class LStorage {
  constructor() {
    const self = this;
          self.setData = self.setData;
          self.getData = self.getData;
          self.removeData = self.removeData;
          self.clearData = self.clearData;
  }

  setData(key, data) {
    if(localStorage && localStorage.setItem) {
      if(JSON.stringify(data) === undefined)
        localStorage.setItem(key, JSON.stringify("" + data + ""));
      else
        localStorage.setItem(key, JSON.stringify(data));
    }
  }

  getData(key) {
    let status;

    if(localStorage && localStorage.getItem) {
      status = localStorage.getItem(key);
      if(!status)
        return undefined;
      else
        return JSON.parse(localStorage.getItem(key));
    }
  };

  removeData(key) {
    localStorage.removeItem(key);
  };

  clearData() {
    localStorage.clear();
  };
}

export default LStorage;