import { customElement , LitElement , html , TemplateResult } from 'lit-element' ; @ customElement ( 'side-nav' ) export class SideNav extends LitElement { render ( ) { return html `
      <div>
        <ul>
          <li>
            <a href="/components/button">Button</a>
          </li>
        </ul>
      </div>
    ` ; } }