misskey/packages/frontend/src/directives/anim.ts

import { Directive } from 'vue';

export default {
	beforeMount(src, binding, vn) {
		src.style.opacity = '0';
		src.style.transform = 'scale(0.9)';
		// ページネーションと相性が悪いので
		//if (typeof binding.value === 'number') src.style.transitionDelay = `${binding.value * 30}ms`;
		src.classList.add('_zoom');
	},

	mounted(src, binding, vn) {
		window.setTimeout(() => {
			src.style.opacity = '1';
			src.style.transform = 'none';
		}, 1);
	},
} as Directive;