From 47184d4194f015442270a280b33ee850ba9b0f83 Mon Sep 17 00:00:00 2001
From: "T. R. Bernstein" <137705289+trbernstein@users.noreply.github.com>
Date: Wed, 18 Dec 2024 10:59:05 +0100
Subject: [PATCH] Use optional chaining to catch null error codes in error.js
 (#1054)

* Use optional chaining to catch null error codes in error.js

Starting a new vite project and selecting svelte-ts template results in an error, because `code` var in error.js is null. Optional chaining resolves this issue.

* chore: add changeset

---------

Co-authored-by: dominikg <dominik.goepel@gmx.de>
---
 .changeset/giant-plants-learn.md               | 5 +++++
 packages/vite-plugin-svelte/src/utils/error.js | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/giant-plants-learn.md

diff --git a/.changeset/giant-plants-learn.md b/.changeset/giant-plants-learn.md
new file mode 100644
index 000000000..5142ca7c4
--- /dev/null
+++ b/.changeset/giant-plants-learn.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/vite-plugin-svelte': patch
+---
+
+fix errorhandling to work with errors that don't have a code property
diff --git a/packages/vite-plugin-svelte/src/utils/error.js b/packages/vite-plugin-svelte/src/utils/error.js
index cbc375b2d..31e3c5af3 100644
--- a/packages/vite-plugin-svelte/src/utils/error.js
+++ b/packages/vite-plugin-svelte/src/utils/error.js
@@ -108,7 +108,7 @@ function formatFrameForVite(frame) {
  * @returns {boolean}
  */
 function couldBeFixedByCssPreprocessor(code) {
-	return code === 'expected_token' || code === 'unexpected_eof' || code.startsWith('css_');
+	return code === 'expected_token' || code === 'unexpected_eof' || code?.startsWith('css_');
 }
 
 /**