asksuite-core/singletons/Cache.js

const _ = require('lodash');

const Singleton = require('./Singleton');

module.exports = class Cache extends Singleton {
  constructor() {
    super();
    if (this.constructor === Cache) {
      throw new TypeError('Abstract class "Cache" cannot be instantiated directly.');
    }
    this.store = {};
  }

  set(key, value) {
    this.store[key] = value;
  }

  remove(key) {
    delete this.store[key];
  }

  get(key) {
    return this.store[key];
  }

  getStoreCopy() {
    return _.cloneDeep(this.store);
  }
};