README.md

Как расширять:

import LocalStorageManager from './LocalStorageManager.js'



class MenuConstructorLocalStorage extends LocalStorageManager {
  setLocalStorage(name, value) {
    if (name === "groupId") {
      this.removeLocalStorage("programId")
    }

    super.setLocalStorage(name, value)
  }
}

const menuConstructorLocalStorage = new MenuConstructorLocalStorage()

menuConstructorLocalStorage.setPrefix('menu-constructor-form-order_')

export default menuConstructorLocalStorage

LocalStorageManager.js

// @ts-check
/**
 * @version 20240605
 *
 * @export
 * @class LocalStorageManager
 */
export default class LocalStorageManager {
  constructor() {
    this.prefix = ""
  }

  setPrefix(newPrefix) {
    this.prefix = newPrefix
  }

  removeLocalStorage(name) {
    localStorage.removeItem(this.prefix + name)
  }

  setLocalStorage(name, value) {
    if (value !== null && value !== undefined) {
      localStorage.setItem(this.prefix + name, JSON.stringify(value))
    }
  }

  getLocalStorage(name) {
    const data = localStorage.getItem(this.prefix + name)
    if (data) {
      try {
        return JSON.parse(data)
      } catch (e) {
        return data
      }
    }
  }

  clearLocalStorage() {
    Object.keys(localStorage).forEach(key => {
      if (key.startsWith(this.prefix)) {
        localStorage.removeItem(key)
      }
    })
  }
}