From cb1358cc417effeb2e747f811260936c11b8923d Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Wed, 19 Jul 2023 09:39:45 +0200
Subject: [PATCH] fix: don't add accessor twice (#8996)

In dev mode, Svelte creates a setter to throw an error noting that you can't set that readonly prop, which resulted in the accessor getting applied twice to the custom element wrapper, causing an error
fixes #8971
---
 .changeset/ten-gifts-design.md                           | 5 +++++
 packages/svelte/src/compiler/compile/render_dom/index.js | 6 +++++-
 2 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/ten-gifts-design.md

diff --git a/.changeset/ten-gifts-design.md b/.changeset/ten-gifts-design.md
new file mode 100644
index 000000000000..a4e154fc9ccf
--- /dev/null
+++ b/.changeset/ten-gifts-design.md
@@ -0,0 +1,5 @@
+---
+'svelte': patch
+---
+
+fix: don't add accessor twice
diff --git a/packages/svelte/src/compiler/compile/render_dom/index.js b/packages/svelte/src/compiler/compile/render_dom/index.js
index b2d02bb78c1e..0627e7e0cb58 100644
--- a/packages/svelte/src/compiler/compile/render_dom/index.js
+++ b/packages/svelte/src/compiler/compile/render_dom/index.js
@@ -583,7 +583,11 @@ export default function dom(component, options) {
 		}, {});
 		const slots_str = [...component.slots.keys()].map((key) => `"${key}"`).join(',');
 		const accessors_str = accessors
-			.filter((accessor) => !writable_props.some((prop) => prop.export_name === accessor.key.name))
+			.filter(
+				(accessor) =>
+					accessor.kind === 'get' &&
+					!writable_props.some((prop) => prop.export_name === accessor.key.name)
+			)
 			.map((accessor) => `"${accessor.key.name}"`)
 			.join(',');
 		const use_shadow_dom =