Inline module scripts can usefully have `async`

[tigt]

ct/ct.css

Lines 187 to 203 in 1f0a063

	/**
	* Async and defer simply do not work on inline scripts. It won’t do any harm,
	* but it’s useful to know about.
	*/
	head script:not([src])[async],
	head script:not([src])[defer] {
	border-style: var(--ct-is-problematic);
	border-color: var(--ct-warn);
	}
	head script:not([src])[async]::before {
	content: "The async attribute is redundant on inline scripts"
	}
	head script:not([src])[defer]::before {
	content: "The defer attribute is redundant on inline scripts"
	}

Async and defer simply do not work on inline scripts. It won’t do any harm, but it’s useful to know about.

This is true for classic scripts, but type=module inline scripts can usefully have async applied:

<script type=module>
  // I run like `defer`!
</script>

<script type=module async>
  // I run as soon as encountered but non-blocking!
</script>

defer is still useless, as it is redundant.