twibooru-favoriters.user.js

// ==UserScript==
// @name         Twibooru Favoriters
// @description  Restore the favoriters tab on image pages
// @version      1.0.0
// @author       Marker
// @license      MIT
// @namespace    https://github.com/marktaiwan/
// @match        https://*.twibooru.org/*
// @inject-into  content
// @noframes
// ==/UserScript==

(function () {
'use strict';

function $(selector, parent = document) {
  return parent.querySelector(selector);
}

const imageTarget = $('#image_target');
const imageContainer = imageTarget?.closest('.image-show-container');

if (!imageTarget || !imageContainer ) return;

const imageId = imageContainer.dataset.imageId;
const imageOptionsArea = $('#image_options_area');
const header = $('.block__header', imageOptionsArea);
const anchor = document.createElement('a');
anchor.href = '#';
anchor.dataset.clickTab = 'favoriters';
anchor.dataset.loadTab = `/images/${imageId}/favorites`;
anchor.innerHTML = '<i class="fa fa-star"></i> List favoriters';

header.appendChild(anchor);
})();