From 53b9570e3d36000d9b1cd24504d824eb3d8989c6 Mon Sep 17 00:00:00 2001
From: ComputerGuy <63362464+Ocean-OS@users.noreply.github.com>
Date: Sun, 5 Oct 2025 14:55:18 -0700
Subject: [PATCH] fix: don't replace rest props with `$$props` for excluded
 props

---
 .changeset/nervous-flies-laugh.md                 |  5 +++++
 .../2-analyze/visitors/VariableDeclarator.js      | 15 +++++++++++++++
 .../3-transform/client/visitors/Identifier.js     |  6 +++++-
 packages/svelte/src/compiler/phases/scope.js      |  2 +-
 .../rest-props-excludes-properties/_config.js     |  7 +++++++
 .../component.svelte                              |  4 ++++
 .../rest-props-excludes-properties/main.svelte    |  4 ++++
 7 files changed, 41 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/nervous-flies-laugh.md
 create mode 100644 packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/_config.js
 create mode 100644 packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/component.svelte
 create mode 100644 packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/main.svelte

diff --git a/.changeset/nervous-flies-laugh.md b/.changeset/nervous-flies-laugh.md
new file mode 100644
index 000000000000..88c7694bcdc4
--- /dev/null
+++ b/.changeset/nervous-flies-laugh.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: don't replace rest props with `$$props` for excluded props
diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/VariableDeclarator.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/VariableDeclarator.js
index f56a665de8b5..7a85b4a93aa1 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/VariableDeclarator.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/VariableDeclarator.js
@@ -46,6 +46,21 @@ export function VariableDeclarator(node, context) {
 								: path.is_rest
 									? 'rest_prop'
 									: 'prop';
+				if (rune === '$props' && binding.kind === 'rest_prop' && node.id.type === 'ObjectPattern') {
+					const { properties } = node.id;
+					/** @type {string[]} */
+					const exclude_props = [];
+					for (const property of properties) {
+						if (property.type === 'RestElement') {
+							continue;
+						}
+						const key = /** @type {Identifier | Literal & { value: string | number }} */ (
+							property.key
+						);
+						exclude_props.push(key.type === 'Identifier' ? key.name : key.value.toString());
+					}
+					(binding.metadata ??= {}).exclude_props = exclude_props;
+				}
 			}
 		}
 
diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/Identifier.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/Identifier.js
index b01ed01bd706..b43ec7891ea7 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/Identifier.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/Identifier.js
@@ -32,7 +32,11 @@ export function Identifier(node, context) {
 				grand_parent?.type !== 'AssignmentExpression' &&
 				grand_parent?.type !== 'UpdateExpression'
 			) {
-				return b.id('$$props');
+				const key = /** @type {Identifier} */ (parent.property);
+
+				if (!binding.metadata?.exclude_props?.includes(key.name)) {
+					return b.id('$$props');
+				}
 			}
 		}
 
diff --git a/packages/svelte/src/compiler/phases/scope.js b/packages/svelte/src/compiler/phases/scope.js
index 0c6b64dd044d..ffccaffba393 100644
--- a/packages/svelte/src/compiler/phases/scope.js
+++ b/packages/svelte/src/compiler/phases/scope.js
@@ -122,7 +122,7 @@ export class Binding {
 
 	/**
 	 * Additional metadata, varies per binding type
-	 * @type {null | { inside_rest?: boolean; is_template_declaration?: boolean }}
+	 * @type {null | { inside_rest?: boolean; is_template_declaration?: boolean; exclude_props?: string[] }}
 	 */
 	metadata = null;
 
diff --git a/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/_config.js b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/_config.js
new file mode 100644
index 000000000000..66a42c08dbc7
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/_config.js
@@ -0,0 +1,7 @@
+import { test } from '../../test';
+
+export default test({
+	async test({ assert, target }) {
+		assert.equal(target.textContent, ' false');
+	}
+});
diff --git a/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/component.svelte b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/component.svelte
new file mode 100644
index 000000000000..40561218db35
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/component.svelte
@@ -0,0 +1,4 @@
+<script>
+    const { name, ...rest } = $props();
+</script>
+{rest.name} {'name' in rest}
\ No newline at end of file
diff --git a/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/main.svelte b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/main.svelte
new file mode 100644
index 000000000000..d9f6d8a21c46
--- /dev/null
+++ b/packages/svelte/tests/runtime-runes/samples/rest-props-excludes-properties/main.svelte
@@ -0,0 +1,4 @@
+<script>
+    import Component from './component.svelte';
+</script>
+<Component name='world' />
\ No newline at end of file