Read-only bindings require getter function, even though it should be irrelevant

[brunnerh]

Describe the bug

E.g. you will need something like

<input bind:this={() => {}, input => { ... }} />

Maybe bind:this={null, input => { ... }} or some other flavor should be possible?

Reproduction

<script>
	let value = $state();
	$inspect(value);
</script>

<input value="test" bind:this={null, e => value = e.value} />

Playground

Logs

System Info

REPL

Severity

annoyance

[paoloricciuti]

I think it's doable...but it's really needed if the bind is unidirectional? Who use this instead of just bind:this?

[brunnerh]

Possibly useful in snippets.

{@render thing(element => ...)}

{#snippet thing(cb)}
   <input bind:this={null, cb}>
{/snippet}

Otherwise you need an object with a property definition.

[dummdidumm]

In that case why not <input oninput={cb} /> instead?

Honestly not sure if we need to enhance this for such an edge case (and it's only a few characters)

[paoloricciuti]

It's bind:this not bind:value...but yeah feels like a super edge case...however it could be just a quick fix so we might just as well doing it.