From 57b727fc517bca93adcb2ab52993e43546225c83 Mon Sep 17 00:00:00 2001
From: Jovi De Croock <jovi.decroock@shopify.com>
Date: Mon, 3 Nov 2025 16:38:40 +0100
Subject: [PATCH 1/2] Guard extension points being undefined

---
 .../models/extensions/specifications/ui_extension.ts  | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/packages/app/src/cli/models/extensions/specifications/ui_extension.ts b/packages/app/src/cli/models/extensions/specifications/ui_extension.ts
index fce09451958..03cddaeca07 100644
--- a/packages/app/src/cli/models/extensions/specifications/ui_extension.ts
+++ b/packages/app/src/cli/models/extensions/specifications/ui_extension.ts
@@ -91,7 +91,7 @@ const uiExtensionSpec = createExtensionSpecification({
     return validateUIExtensionPointConfig(directory, config.extension_points, path)
   },
   deployConfig: async (config, directory) => {
-    const transformedExtensionPoints = config.extension_points.map(addDistPathToAssets)
+    const transformedExtensionPoints = config.extension_points?.map(addDistPathToAssets) ?? []
 
     return {
       api_version: config.api_version,
@@ -105,7 +105,10 @@ const uiExtensionSpec = createExtensionSpecification({
   },
   getBundleExtensionStdinContent: (config) => {
     const shouldIncludeShopifyExtend = isRemoteDomExtension(config)
-    const main = config.extension_points
+
+    const extensionPoints = config.extension_points || []
+
+    const main = extensionPoints
       .map(({target, module}, index) => {
         if (shouldIncludeShopifyExtend) {
           return `import Target_${index} from '${module}';shopify.extend('${target}', (...args) => Target_${index}(...args));`
@@ -115,7 +118,7 @@ const uiExtensionSpec = createExtensionSpecification({
       .join('\n')
 
     const assets: {[key: string]: Asset} = {}
-    config.extension_points.forEach((extensionPoint) => {
+    extensionPoints.forEach((extensionPoint) => {
       // Start of Selection
       Object.entries(extensionPoint.build_manifest.assets).forEach(([identifier, asset]) => {
         if (identifier === AssetIdentifier.Main) {
@@ -142,7 +145,7 @@ const uiExtensionSpec = createExtensionSpecification({
   },
   hasExtensionPointTarget: (config, requestedTarget) => {
     return (
-      config.extension_points.find((extensionPoint) => {
+      config.extension_points?.find((extensionPoint) => {
         return extensionPoint.target === requestedTarget
       }) !== undefined
     )

From c251710f79d015880d46b26b939d3df17096e559 Mon Sep 17 00:00:00 2001
From: Jovi De Croock <jovi.decroock@shopify.com>
Date: Mon, 3 Nov 2025 17:23:06 +0100
Subject: [PATCH 2/2] Add changeset

---
 .changeset/great-scissors-dance.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/great-scissors-dance.md

diff --git a/.changeset/great-scissors-dance.md b/.changeset/great-scissors-dance.md
new file mode 100644
index 00000000000..126946bcc3b
--- /dev/null
+++ b/.changeset/great-scissors-dance.md
@@ -0,0 +1,5 @@
+---
+'@shopify/app': patch
+---
+
+Guard against extension_points being omitted from config