soomla-blog.hack.github.diff.snippet.js

var interval = setInterval(function() {
    var expandPoints = $(".octicon.octicon-unfold");
    expandPoints ? expandPoints.click() : clearInterval(interval);
}, 2000);

Hi @gurdotan. Thanks for the snippet. It looks like github is explicitly setting $ to undefined, so here's an update to your script:

var interval = setInterval(function() {
  var anchor = document.querySelector(".diff-expander");
  anchor ?  anchor.click() : clearInterval(interval);
}, 100);