CDN Resources for is

npm install is

yarn add is

pnpm add is

<script src="https://fastly.jsdelivr.net/npm/is"></script>

<script src="https://unpkg.com/is"></script>

<script type="module">
  import is from 'https://cdn.jsdelivr.net/npm/is/+esm';
</script>

<script type="module">
  import is from 'https://cdn.skypack.dev/is';
</script>