text: 'use strict';
  
  const EXAMPLE_FLAG = process.env.EXAMPLE_FLAG
      , EXAMPLE_STRING = process.env.EXAMPLE_STRING
  
  chrome.runtime.onInstalled.addListener(details => {
    console.log('Previous version is %o', details.previousVersion)
  })
  
  
  chrome.browserAction.setBadgeText({ text: 'ninja' })
  
  
  const ascii = `
     ____   _ ___     _ ___ _
    / __ \\/ / __ \\  / / __ \`/
   / / / / / / / / / / /_/ /
  /_/ /_/_/_/ /_/_/ /\\__,_/
               /___/         `
  
  console.log('%c' + ascii + '%c\n\n%s', 'color: #ddd', '', 'This is the event page for Browser Action.')
  console.log('Configuration: exampleFlag is %o, exampleString is %o', EXAMPLE_FLAG, EXAMPLE_STRING)
  