From 5a41f4130a15038e11f40be1a32d34d03bceab15 Mon Sep 17 00:00:00 2001
From: ComputerGuy <63362464+Ocean-OS@users.noreply.github.com>
Date: Fri, 25 Jul 2025 14:25:33 -0700
Subject: [PATCH] handle assignment in constructor

---
 .../src/compiler/phases/2-analyze/visitors/ClassBody.js    | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/packages/svelte/src/compiler/phases/2-analyze/visitors/ClassBody.js b/packages/svelte/src/compiler/phases/2-analyze/visitors/ClassBody.js
index 0208e075f4..7c0164ed3e 100644
--- a/packages/svelte/src/compiler/phases/2-analyze/visitors/ClassBody.js
+++ b/packages/svelte/src/compiler/phases/2-analyze/visitors/ClassBody.js
@@ -57,6 +57,13 @@ export function ClassBody(node, context) {
 				e.state_field_duplicate(node, name);
 			}
 
+			const _key = (key.type === 'PrivateIdentifier' ? '#' : '') + name;
+			const field = fields.get(_key);
+
+			if (field.length > 1 || (field.length === 1 && field[0] !== 'prop')) {
+				e.duplicate_class_field(node, _key);
+			}
+
 			state_fields.set(name, {
 				node,
 				type: rune,