This webcomponent follows the open-wc recommendation.
npm i ix-select
<script type="module">
import 'ix-select/ix-select.js';
import 'ix-select/ix-select-option.js';
</script>
<ix-select>
<ix-select-option>
<div value="1">Option label</div>
</ix-select-option>
</ix-select>
import { IxSelect, IxSelectOption } from 'ix-select'
<IxSelect>
<IxSelectOption>
<div value="1">Option label</div>
</IxSelectOption>
</IxSelect>
Full documentation and demo are available at DLR Component Gallery.