Mastodon で表示される⭐ボタンを misskey っぽいところからの投稿のみ🍮にします。

mastodon_misskey_pudding.user.js

// ==UserScript==
// @name        [Mastodon] This is not ⭐, but 🍮!
// @namespace   hen.acho.co
// @include     https://*/web/*
// @version     1.180415
// @description replace misskey's star button with pudding
// @downloadURL https://gist.github.com/pacochi/7a529cc0a344ba90e7b764f944e037e0/raw/mastodon_misskey_pudding.user.js
// @run-at      document-idle
// @grant       none
// ==/UserScript==

(() => {
	'use strict';

	const body = document.querySelector('body.app-body #mastodon');
	if (!body) return;

	const putPudding = node => {

		if (!node.querySelector('a[class$="status__display-name"][href^="https://misskey."]'))
		 return;

		if (node.parentNode.classList.contains('detailed-status__wrapper'))
		 return node.childNodes.forEach(putPudding);

		if (node.className == 'column')
		 return node.querySelector('.item-list, .detailed-status__wrapper > div').childNodes.forEach(putPudding);

		const star = node.querySelector('.icon-button .fa-star');
		if (!star) return;

		star.classList.remove('fa-star');
		star.classList.add('fa-pudding');

	};

	document.head.appendChild(Object.assign(document.createElement('style'), {
	 textContent: `
.fa-pudding::before {
    background: url('https://twemoji.maxcdn.com/72x72/1f36e.png');
    background-repeat: no-repeat;
    background-size: 100%;
    filter: grayscale(100%) brightness(200%) opacity(50%);
    content: "\\2003";
}
.star-icon.active > .fa-pudding::before, .icon-button.active > .fa-pudding::before {
    filter: grayscale(0%) brightness(100%) opacity(100%);
}
`
	}));

	document.querySelectorAll('article').forEach(putPudding);

	new MutationObserver((mutations, observer) => {

		mutations.reduce(
		 (nodes, mutation) => nodes.concat(Array.from(mutation.addedNodes)), []
		).filter(
		 node => ['ARTICLE', 'DIV'].includes(node.tagName)
		).forEach(putPudding);

	}).observe(body, { childList: true, subtree: true });

})();