text: 'use strict';
  
  export const TAB_ID_KEY = 'tabId';
  export const TIMESTAMP_KEY = 'timestamp';
  export const MESSAGE_TYPE_KEY = 'messageType';
  
  export const MESSAGE_TYPE_POPUP_TO_BACKGROUND = 'popup2background';
  export const MESSAGE_TYPE_BING_TO_BACKGROUND = 'bing2background';
  export const MESSAGE_TYPE_CONTENT_SCRIPT_TO_BACKGROUND = 'contentScript2background';
  export const MESSAGE_TYPE_BACKGROUND_TO_CONTENT_SCRIPT = 'background2contentScript';
  
  export function getTimeStamp() {
    return Math.floor(Date.now() / 1000);
  }
  
  