/**
@license
Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
Code distributed by Google as part of the polymer project is also
subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
*/
let e,t=null,n=window.HTMLImports&&window.HTMLImports.whenReady||null;export default function documentWait(o){requestAnimationFrame((function(){n?n(o):(t||(t=new Promise((t=>{e=t})),"complete"===document.readyState?e():document.addEventListener("readystatechange",(()=>{"complete"===document.readyState&&e()}))),t.then((function(){o&&o()})))}))}