text: chrome.action.onClicked.addListener((tab) => {
  	window
  		.open(
  			window.location.href.replace(/github(1s)?.com/, function(match, p1) {
  				return p1 ? 'github.com' : 'github1s.com';
  			}),
  			'_blank'
  		)
  		.focus();
  });
  