npm install source-mapyarn add source-mappnpm add source-map<script src="https://fastly.jsdelivr.net/npm/source-map"></script><script src="https://unpkg.com/source-map"></script><script type="module">
import sourcemap from 'https://cdn.jsdelivr.net/npm/source-map/+esm';
</script><script type="module">
import sourcemap from 'https://cdn.skypack.dev/source-map';
</script>