address feedback

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

@@ -214,11 +214,6 @@ 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/compiler/phases/3-transform/client/visitors/shared/utils.js

@@ -207,6 +207,17 @@ export function build_bind_this(expression, value, { state, visit }) {
 export function build_validate_binding(state, binding, expression) {
 	const string = state.analysis.source.slice(binding.start, binding.end);
 
+	if (
+		binding.expression.type === 'MemberExpression' &&
+		binding.expression.object.type === 'Identifier'
+	) {
+		var ref_binding = state.scope.get(binding.expression.object.name);
+
+		if (ref_binding?.kind === 'store_sub') {
+			return b.empty;
+		}
+	}
+
 	const get_object = b.thunk(/** @type {Expression} */ (expression.object));
 	const get_property = b.thunk(
 		/** @type {Expression} */ (

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

@@ -105,8 +105,7 @@ export function validate_binding(binding, get_object, get_property, line, column
 	var filename = dev_current_component_function?.[FILENAME];
 
 	render_effect(() => {
-		// @ts-ignore
-		if (warned || get_object.$is_store) return;
+		if (warned) return;
 
 		var object = get_object();
 		var property = get_property();