text: /**
   * Storage
   */
  export class Storage {
    /**
     * Constructor
     */
    constructor() {
    }
  
    static loadConfig() {
  	return new Promise(function(resolve, reject) {
  	  chrome.storage.local.get("format", function(items) {
  		resolve(items);
  	  })
      });	
    }
    
    static save(value) {
  	chrome.storage.local.set({format:value});
    }  
  }
  