text: 'use strict';
  
  module.exports = class MemoryStore {
    constructor() {
      this.content = {};
    }
    setItem(key, content) {
      this.content[key] = String(content);
      return content;
    }
    getItem(key) {
      return this.content[key];
    }
    removeItem(key) {
      delete this.content[key];
    }
  };
  