Observer (restore transcript in youtube)

observer.js

var button = document.querySelectorAll('ytd-menu-service-item-renderer')[1];
var observer = new MutationObserver(function(mutations) {
  mutations.forEach(function(mutation) {
    if (mutation.type == "attributes") {
      console.log("attributes changed"); 
      button.click();
    }
  });
});
observer.observe(document.getElementById('transcript-loader'), {
  attributes: true //configure it to listen to attribute changes
});