more fixes

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

@@ -640,7 +640,16 @@ export function get_prop_source(binding, state, name, initial) {
 		flags |= PROPS_IS_RUNES;
 	}
 
-	if (binding.kind === 'bindable_prop') {
+	if (
+		binding.kind === 'bindable_prop' ||
+		// Make sure that
+		// let { foo: _, ...rest } = $props();
+		// let { foo } = $props.bindable();
+		// marks both `foo` and `_` as bindable to prevent false-positive runtime validation errors
+		[...state.scope.declarations.values()].some(
+			(d) => d.kind === 'bindable_prop' && d.prop_alias === name
+		)
+	) {
 		flags |= PROPS_IS_BINDABLE;
 	}
 

packages/svelte/src/compiler/types/index.d.ts

@@ -282,7 +282,7 @@ export interface Binding {
 	scope: Scope;
 	/** For `legacy_reactive`: its reactive dependencies */
 	legacy_dependencies: Binding[];
-	/** Legacy props: the `class` in `{ export klass as class}` */
+	/** Legacy props: the `class` in `{ export klass as class}`. $props(): The `class` in { class: klass } = $props() */
 	prop_alias: string | null;
 	/**
 	 * If this is set, all references should use this expression instead of the identifier name.

packages/svelte/tests/runtime-runes/samples/bind-and-spread/button.svelte

@@ -1,5 +1,5 @@
 <script>
-	let { ...properties } = $props();
+	let { value: _, ...properties } = $props();
 	let { value } = $props.bindable();
 </script>