cookie-clicker-cheat.js

// Click the big cookie
const bigCookie = document.getElementById("bigCookie");

var bigCookieInterval = setInterval(() => {
  bigCookie.click();
}, 10);

// Pet the dragon
const dragonPetInterval = setInterval(() => {
  Game.ClickSpecialPic();
}, 1e3);

// Checks for and autoclicks golden cookies when they appear
var goldenCookieInterval = setInterval(() => {
  // Sometimes the screen will fill up with tons of golden cookies. That's why
  // we're selecting multiple elements, just in case that happens.
  const goldenCookies = [].slice.call(document.querySelectorAll("#shimmers .shimmer"));

  if (goldenCookies.length) {
    goldenCookies.forEach(goldenCookie => {
      // Check if this is a Wrath Cookie. These appear in the Grandmapocalypse!
      if (goldenCookie.style.backgroundImage.indexOf("wrath") === -1) {
        goldenCookie.click();

        console.log("Clicked on a golden cookie!");
      } else {
        console.log("Sidestepped a wrath cookie. Phew!");
      }
    });
  }
}, 2e3);

// Click on fortunes
setInterval(() => {
  if (Game.TickerEffect && Game.TickerEffect.type == "fortune") {
    Game.tickerL.click();
  }
}, 1e3);

I've not played cookie clicker for well over a year, so if there was a major upgrade, it's totally possibly that this will no longer work.