It's easy peasy
<!-- customElements polyfill (12.2KB) -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/document-register-element/1.1.1/document-register-element.js"></script><!-- our custom element's source (6.3KB) -->
<script src="https://unpkg.com/toggle-element"></script>
<link href="https://unpkg.com/toggle-element/styles.css" rel="stylesheet"><aaronshaf-toggle checked value="yes"></aaronshaf-toggle>Check out the demo.