export_from_twitter.js

// go to following or followers page

let values = new Set([]);
let height = 0;
function scroll() {
  if (height < document.body.scrollHeight) {
    height = document.body.scrollHeight;
    window.scrollTo(0, height);
    setTimeout(scroll, 2000);
    [
      ...document.querySelectorAll(
        "[aria-label^='Timeline: Follow'] a>div>div.css-1hf3ou5>span"
      ),
    ].forEach(({ innerText }) => {
      values.add(innerText.replace("@", ""));
    });
  } else {
    const result = [...values].join("\n");
    console.log(result);
    // const popup = window.open("about:blank", "", "_blank");
    // popup.document.write(`<pre>${result}</pre>`);
  }
}
scroll();

export_likes_or_bookmarks.js

// go to likes or bookmarks page

let values = new Set([]);
let height = 0;
function scroll() {
  if (height < document.body.scrollHeight) {
    height = document.body.scrollHeight;
    window.scrollTo(0, height);
    setTimeout(scroll, 2000);
    [
      ...document.querySelectorAll(
        `[aria-label$='${
          document.title.includes("liked by") ? "liked Tweets" : "Bookmarks"
        }'] a:has(time)`
      ),
    ].forEach(({ href }) => {
      values.add(href);
    });
  } else {
    const result = [...values].join("\n");
    console.log(result);
  }
}
scroll();

paste copy([...values].join("\n")) in a separate command afterwards if you want them on your clipboard