fix: improve prop binding warning validation for stores

.changeset/healthy-dancers-play.md

@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: improve prop binding warning validation for stores

packages/svelte/src/compiler/phases/3-transform/client/transform-client.js

@@ -214,6 +214,11 @@ export function client_component(analysis, options) {
 						: b.thunk(store_get)
 				)
 			);
+			if (dev) {
+				store_setup.push(
+					b.stmt(b.assignment('=', b.member(binding.node, b.id('$is_store')), b.literal(true)))
+				);
+			}
 		}
 	}
 

packages/svelte/src/internal/client/validate.js

@@ -105,7 +105,7 @@ export function validate_binding(binding, get_object, get_property, line, column
 	var filename = dev_current_component_function?.[FILENAME];
 
 	render_effect(() => {
-		if (warned) return;
+		if (warned || get_object.$is_store) return;
 
 		var object = get_object();
 		var property = get_property();

packages/svelte/tests/runtime-runes/samples/binding-property-store/Child.svelte

@@ -0,0 +1,5 @@
+<script>
+	let { count = $bindable() } = $props();
+</script>
+
+<input type="number" bind:value={count} />

packages/svelte/tests/runtime-runes/samples/binding-property-store/_config.js

@@ -0,0 +1,11 @@
+import { test } from '../../test';
+
+export default test({
+	mode: ['client'],
+	compileOptions: {
+		dev: true
+	},
+	async test({ warnings, assert }) {
+		assert.deepEqual(warnings, []);
+	}
+});

packages/svelte/tests/runtime-runes/samples/binding-property-store/main.svelte

@@ -0,0 +1,9 @@
+<script>
+	import { writable } from 'svelte/store';
+	import Child from './Child.svelte';
+
+	let stuff = writable({ count: 0 });
+</script>
+
+<Child bind:count={$stuff.count} />
+<p>{$stuff.count}</p>