From add8a596f2144c74350a7e29001b4a0133919bb6 Mon Sep 17 00:00:00 2001
From: Vallhalen <konrad.krawczuk@gmail.com>
Date: Tue, 7 Apr 2026 19:19:05 +0200
Subject: [PATCH 1/2] fix: default adminPages and dashboardWidgets to empty
 arrays in manifest

When a plugin descriptor has `adminPages` or `adminWidgets` set to
`undefined` (e.g. not declared), the manifest passes `undefined` to the
admin UI, which then crashes with "Cannot read properties of undefined
(reading 'map')" when iterating over them.

This applies the `?? []` fallback in all three code paths that populate
the manifest: node_modules plugins, sandboxed (standard format) plugins,
and marketplace plugins.

Fixes #355
---
 packages/core/src/emdash-runtime.ts | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/packages/core/src/emdash-runtime.ts b/packages/core/src/emdash-runtime.ts
index 810b0bbae..abfb3e1b8 100644
--- a/packages/core/src/emdash-runtime.ts
+++ b/packages/core/src/emdash-runtime.ts
@@ -1238,8 +1238,8 @@ export class EmDashRuntime {
 				version: plugin.version,
 				enabled,
 				adminMode,
-				adminPages: plugin.admin?.pages,
-				dashboardWidgets: plugin.admin?.widgets,
+				adminPages: plugin.admin?.pages ?? [],
+				dashboardWidgets: plugin.admin?.widgets ?? [],
 				portableTextBlocks: plugin.admin?.portableTextBlocks,
 				fieldWidgets: plugin.admin?.fieldWidgets,
 			};
@@ -1261,8 +1261,8 @@ export class EmDashRuntime {
 				enabled,
 				sandboxed: true,
 				adminMode: hasAdminPages || hasWidgets ? "blocks" : "none",
-				adminPages: entry.adminPages,
-				dashboardWidgets: entry.adminWidgets,
+				adminPages: entry.adminPages ?? [],
+				dashboardWidgets: entry.adminWidgets ?? [],
 			};
 		}
 
@@ -1284,8 +1284,8 @@ export class EmDashRuntime {
 				enabled,
 				sandboxed: true,
 				adminMode: hasAdminPages || hasWidgets ? "blocks" : "none",
-				adminPages: pages,
-				dashboardWidgets: widgets,
+				adminPages: pages ?? [],
+				dashboardWidgets: widgets ?? [],
 			};
 		}
 

From e765677bd17ba9ad67c68645538c8019e706d390 Mon Sep 17 00:00:00 2001
From: Vallhalen <konrad.krawczuk@gmail.com>
Date: Wed, 8 Apr 2026 23:02:39 +0200
Subject: [PATCH 2/2] Add changeset for plugin admin pages fix

---
 .changeset/fix-plugin-admin-pages.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 .changeset/fix-plugin-admin-pages.md

diff --git a/.changeset/fix-plugin-admin-pages.md b/.changeset/fix-plugin-admin-pages.md
new file mode 100644
index 000000000..8d90e24a9
--- /dev/null
+++ b/.changeset/fix-plugin-admin-pages.md
@@ -0,0 +1,5 @@
+---
+"emdash": patch
+---
+
+Fix: default adminPages and dashboardWidgets to empty arrays in manifest to prevent admin UI crash when plugins omit these properties.