Bindings don't receive context from let variables

[Rich-Harris]

Via this Stack Overflow question.

Using a let variable in a binding doesn't work — the binding function isn't passed the relevant context, it seems: https://svelte.dev/repl/278fe8b586f443889632803dcff8bcca?version=3.6.1

[Eh2406]

This issue was closed, but the example has the same error on the current version 3.16.7. Should I open a new issue?

[Conduitry]

What issue are you seeing? The bindings in https://svelte.dev/repl/278fe8b586f443889632803dcff8bcca?version=3.16.7 seem to be working fine for me.

[Eh2406]

You are correct. Sorry for the noize. I must have gotten my links mixed up. That example is not triggering an error.

I just got myself very confused while reading the error message on my code. I thought it was referring to the let in export let thing;. The only thing that came up googling the message was this discussion. It took me sometime to notice the : and figure out that it was referring to the let: in let:index. My code had:

<FancyList items={items} let:item>
	<input type=text bind:value={item.x}>
	<input type=text bind:value={item.y}>
</FancyList>

Once I saw the difference I was able to use the trick (item -> items[index]) from this issue to fix it.