Hide Migaku Extension GrabbyTabby on asbplayer's website

Hide-Migaku-GrabbyTabby.js

// ==UserScript==
// @name         Hide Migaku GrabbyTabby
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Hides the Migaku GrabbyTabby on asbplayer page
// @author       You
// @match        https://killergerbah.github.io/asbplayer/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function() {
    'use strict';

    // CSS to hide the ToolbarGrabbyTabby
    const hideToolbarCSS = `
        .ToolbarGrabbyTabby__wrapper {
            display: none !important;
        }
    `;

    // Function to inject the style into the shadow DOM
    function injectStyleToShadowDOM() {
        const migakuShadowDom = document.getElementById('MigakuShadowDom');
        if (migakuShadowDom && migakuShadowDom.shadowRoot) {
            const style = document.createElement('style');
            style.id = 'migaku-toolbar-hider';
            style.textContent = hideToolbarCSS;
            migakuShadowDom.shadowRoot.appendChild(style);
            return true;
        }
        return false;
    }

    // Use MutationObserver to detect when the shadow DOM is added to the page
    const observer = new MutationObserver((mutations) => {
        for (const mutation of mutations) {
            if (mutation.addedNodes) {
                for (const node of mutation.addedNodes) {
                    if (node.id === 'MigakuShadowDom') {
                        // Wait a brief moment for the shadow DOM to be fully initialized
                        setTimeout(() => {
                            if (injectStyleToShadowDOM()) {
                                observer.disconnect(); // Stop observing once we've injected the style
                            }
                        }, 100);
                    }
                }
            }
        }
    });

    // Start observing the document body for changes
    observer.observe(document.body, { childList: true, subtree: true });

    // Try to inject immediately in case the element already exists
    if (injectStyleToShadowDOM()) {
        observer.disconnect();
    }
})();

Add additional URLs to line 7:

/ @match        https://killergerbah.github.io/asbplayer/*

That you want the script to work on.