import { init } from 'sapper/runtime.js'; // polyfills Promise.all([ typeof URLSearchParams === 'undefined' && import(/* webpackChunkName: 'url-search-params' */ 'url-search-params').then(Params => { window.URLSearchParams = Params Object.defineProperty(window.URL.prototype, 'searchParams', { get() { return new Params(this.search) } }) }) ]).then(() => { // `routes` is an array of route objects injected by Sapper init(document.querySelector('#sapper'), __routes__) })