From 14b133d54f378fb48e8926938ad0d1e03adc6e31 Mon Sep 17 00:00:00 2001
From: Simon Holthausen <simon.holthausen@vercel.com>
Date: Wed, 19 Oct 2022 10:54:55 +0200
Subject: [PATCH] [fix] don't fail on unknown error message

Fixes #7245
---
 .changeset/brown-eels-retire.md  | 5 +++++
 packages/adapter-vercel/index.js | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)
 create mode 100644 .changeset/brown-eels-retire.md

diff --git a/.changeset/brown-eels-retire.md b/.changeset/brown-eels-retire.md
new file mode 100644
index 000000000000..e4b2baaed188
--- /dev/null
+++ b/.changeset/brown-eels-retire.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/adapter-vercel': patch
+---
+
+[fix] don't fail on unknown error message
diff --git a/packages/adapter-vercel/index.js b/packages/adapter-vercel/index.js
index a4dca08a570c..6ce0637d4794 100644
--- a/packages/adapter-vercel/index.js
+++ b/packages/adapter-vercel/index.js
@@ -315,7 +315,7 @@ async function create_function_bundle(builder, entry, dir, runtime) {
 
 		if (error.message.startsWith('Failed to resolve dependency')) {
 			const match = /Cannot find module '(.+?)' loaded from (.+)/;
-			const [, module, importer] = match.exec(error.message);
+			const [, module, importer] = match.exec(error.message) ?? [, error.message, '(unknown)'];
 
 			if (!resolution_failures.has(importer)) {
 				resolution_failures.set(importer, []);