Signal is exposed when creating $derived value accessor

[Thiagolino8]

Describe the bug

$.get is not used when creating $derived value accessor, which ends up exposing the signal

Reproduction

repl

Logs

No response

System Info

Svelte v5.0.0-next.38

Severity

annoyance

[dummdidumm]

What's the use case? I think exporting things from $derived() should be a compiler error.

[Thiagolino8]

The use would be the same as for every accessor, making the state visible to the parent component
I can't see a good reason for $derived to be the exception to this functionality

[dummdidumm]

It would be confusing to explain why you can export $derived like that from a component and it behaves differently compared to an export from a module. The "workaround" is to just export a function which returns the current value, which also better conveis the "this can change" notion -> this code should be a compiler error.

[Rich-Harris]

note that we reverted this change in #10523, this will now work