npm install @damienmortini/element-input-ruler
<script src="node_modules/@damienmortini/element-input-ruler/index.js"></script>
<damo-input-ruler></damo-input-ruler>
<script type="module">
import Element from '@damienmortini/element-input-ruler';
window.customElements.define('my-element-name', class extends Element { });
</script>
<my-element-name></my-element-name>