wallet-web/src/components/app-shadow/AppShadowElement.ts

import { controller } from "@github/catalyst";
import style from "styles/main.scss";

(function () {
    const _shadow = new WeakMap();

    @controller
    class AppShadowElement extends HTMLElement {
        constructor() {
            super();
            _shadow.set(this, this.attachShadow({ mode: "closed" }));
        }

        connectedCallback() {
            const _root = _shadow.get(this);
            const _appMain = document.createElement("app-main");
            const _style = document.createElement("style");
            _style.innerHTML = style;

            _root.appendChild(_style);
            _root.appendChild(_appMain);
        }
    }
})();