Describe the bug

The warning state_referenced_locally does not show up consistently where I believe it should.

Consider this example:

<script lang="ts">  // state created from props should warn but doesn't  let { x } = $props()  let y = $state(x) // ❌ this should warn but doesn't  let z = $state(y) // ❌ this should warn but doesn't   // state created from other state only warns "one level deep"  let a = $state(0)  let b = $state(a) // ✅ this does warn  let c = $state(b) // ❌ this should warn but doesn't   // state created from implicitly undefined state (putting in `undefined`, `null`, `0`, `false` here does warn)  let h = $state()  let j = $state(h) // ❌ this should warn but doesn't </script>

As outlines in the comments above, the warnings are shown very inconsistently.
I believe in many cases (see ❌ above) warnings should be shown.

The main problems are:

• $state(...) created from $props() does not warn
• $state(...) created from other $state(...) only warns "one level deep"
• $state(...) created from implicitly undefined state ($state()) does not warn

Maybe there are more cases that I did not cover that should warn as well.

Reproduction

https://svelte.dev/playground/62605b146a9e4c4f812b9f872ba21288?version=5.35.5

Logs

This reference only captures the initial value of a. Did you mean to reference it inside a closure instead? https://svelte.dev/e/state_referenced_locally (state_referenced_locally)

System Info

playground

Severity

annoyance