From 75c448cb72975b80946f9caa7c4fcb15d2845ef7 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Tue, 10 Jun 2025 14:18:28 -0400
Subject: [PATCH] remove PROXY_REMOVE_PATH

---
 .../client/visitors/VariableDeclaration.js    | 25 +++++++------------
 .../svelte/src/internal/client/constants.js   |  2 --
 packages/svelte/src/internal/client/proxy.js  |  1 -
 .../src/internal/client/reactivity/sources.js |  7 ++----
 4 files changed, 11 insertions(+), 24 deletions(-)

diff --git a/packages/svelte/src/compiler/phases/3-transform/client/visitors/VariableDeclaration.js b/packages/svelte/src/compiler/phases/3-transform/client/visitors/VariableDeclaration.js
index 13869229b5..b531f0df6e 100644
--- a/packages/svelte/src/compiler/phases/3-transform/client/visitors/VariableDeclaration.js
+++ b/packages/svelte/src/compiler/phases/3-transform/client/visitors/VariableDeclaration.js
@@ -9,7 +9,6 @@ import { get_rune } from '../../../scope.js';
 import { get_prop_source, is_prop_source, is_state_source, should_proxy } from '../utils.js';
 import { is_hoisted_function } from '../../utils.js';
 import { get_value } from './shared/declarations.js';
-import { PROXY_REMOVE_PATH } from '#client/constants';
 
 /**
  * @param {VariableDeclaration} node
@@ -90,12 +89,7 @@ export function VariableDeclaration(node, context) {
 								binding.kind === 'bindable_prop' &&
 								should_proxy(initial, context.state.scope)
 							) {
-								initial = b.call(
-									'$.proxy',
-									initial,
-									dev ? b.literal(id.name) : undefined,
-									dev ? b.literal(PROXY_REMOVE_PATH) : undefined
-								);
+								initial = b.call('$.proxy', initial, dev ? b.literal(id.name) : undefined);
 							}
 
 							if (is_prop_source(binding, context.state)) {
@@ -136,20 +130,19 @@ export function VariableDeclaration(node, context) {
 					);
 					const is_state = is_state_source(binding, context.state.analysis);
 					const is_proxy = should_proxy(value, context.state.scope);
+
 					if (rune === '$state' && is_proxy) {
-						value = b.call(
-							'$.proxy',
-							value,
-							dev ? b.literal(id.name) : undefined,
-							dev ? b.literal(PROXY_REMOVE_PATH) : undefined
-						);
+						value = b.call('$.proxy', value, dev ? b.literal(id.name) : undefined);
 					}
+
 					if (is_state) {
 						value = b.call('$.state', value);
+
+						if (dev) {
+							value = b.call('$.tag', value, b.literal(id.name));
+						}
 					}
-					if (dev && is_state) {
-						value = b.call('$.tag', value, b.literal(id.name));
-					}
+
 					return value;
 				};
 
diff --git a/packages/svelte/src/internal/client/constants.js b/packages/svelte/src/internal/client/constants.js
index 98695bf751..268ba29c88 100644
--- a/packages/svelte/src/internal/client/constants.js
+++ b/packages/svelte/src/internal/client/constants.js
@@ -27,8 +27,6 @@ export const EFFECT_IS_UPDATING = 1 << 21;
 export const PROXY_PRESERVE_PATH = 1 << 1;
 /** Change proxy path to new "owner" */
 export const PROXY_CHANGE_PATH = 1 << 2;
-/** "Unown" proxy, so its path becomes `[$state proxy]` */
-export const PROXY_REMOVE_PATH = 1 << 3;
 
 export const STATE_SYMBOL = Symbol('$state');
 export const LEGACY_PROPS = Symbol('legacy props');
diff --git a/packages/svelte/src/internal/client/proxy.js b/packages/svelte/src/internal/client/proxy.js
index 993c6f45a2..6237655e49 100644
--- a/packages/svelte/src/internal/client/proxy.js
+++ b/packages/svelte/src/internal/client/proxy.js
@@ -13,7 +13,6 @@ import {
 	PROXY_CHANGE_PATH,
 	PROXY_PATH_SYMBOL,
 	PROXY_PRESERVE_PATH,
-	PROXY_REMOVE_PATH,
 	STATE_SYMBOL
 } from '#client/constants';
 import { UNINITIALIZED } from '../../constants.js';
diff --git a/packages/svelte/src/internal/client/reactivity/sources.js b/packages/svelte/src/internal/client/reactivity/sources.js
index 847f14d2ec..ad5ad3383d 100644
--- a/packages/svelte/src/internal/client/reactivity/sources.js
+++ b/packages/svelte/src/internal/client/reactivity/sources.js
@@ -27,8 +27,7 @@ import {
 	UNOWNED,
 	MAYBE_DIRTY,
 	BLOCK_EFFECT,
-	ROOT_EFFECT,
-	PROXY_REMOVE_PATH
+	ROOT_EFFECT
 } from '#client/constants';
 import * as e from '../errors.js';
 import { legacy_mode_flag, tracing_mode_flag } from '../../flags/index.js';
@@ -140,9 +139,7 @@ export function set(source, value, should_proxy = false) {
 		e.state_unsafe_mutation();
 	}
 
-	let new_value = should_proxy
-		? proxy(value, DEV ? source.trace_name : undefined, DEV ? PROXY_REMOVE_PATH : undefined)
-		: value;
+	let new_value = should_proxy ? proxy(value, DEV ? source.trace_name : undefined) : value;
 
 	return internal_set(source, new_value);
 }