npm install has-flagyarn add has-flagpnpm add has-flag<script src="https://fastly.jsdelivr.net/npm/has-flag"></script><script src="https://unpkg.com/has-flag"></script><script type="module">
import hasflag from 'https://cdn.jsdelivr.net/npm/has-flag/+esm';
</script><script type="module">
import hasflag from 'https://cdn.skypack.dev/has-flag';
</script>