Svelte 5: legacy mode wrong `export_let_unused` for `svelte:component`

[paoloricciuti]

Describe the bug

If you have something like this

<script>
	export let Component;
</script>

<svelte:component this={Component} />

the Component prop is marked as unused.

Reproduction

REPL

Logs

-

System Info

-

Severity

annoyance

[dummdidumm]

Sounds like we're only counting reads, not writes, as references. We should count both, since it could be a binding.

[paoloricciuti]

Sounds like we're only counting reads, not writes, as references. We should count both, since it could be a binding.

But in the code we are not writing to Component right?

[paoloricciuti]

@dummdidumm we were simply not visiting the expression of the svelte component to collect references...but i'm curious about your comment...did you read the snippet of code wrongly or should i also check something else?