ComfyUI/web/scripts/ui/spinner.js

import { addStylesheet } from "../utils.js";

addStylesheet(import.meta.url);

export function createSpinner() {
 const div = document.createElement("div");
 div.innerHTML = `<div class="lds-ring"><div></div><div></div><div></div><div></div></div>`;
 return div.firstElementChild;
}