From eb9e293fcef38a29cb75020f0afaa92e02581c84 Mon Sep 17 00:00:00 2001
From: Patrik Oldsberg <poldsberg@gmail.com>
Date: Sat, 14 Nov 2020 18:03:10 +0100
Subject: [PATCH] config-loader: skip schema collection from packages that
 don't export package.json

---
 .../config-loader/src/lib/schema/collect.ts   | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/packages/config-loader/src/lib/schema/collect.ts b/packages/config-loader/src/lib/schema/collect.ts
index f7fed94748..6f441a2735 100644
--- a/packages/config-loader/src/lib/schema/collect.ts
+++ b/packages/config-loader/src/lib/schema/collect.ts
@@ -53,12 +53,19 @@ export async function collectConfigSchemas(
     }
     visitedPackages.add(name);
 
-    const pkgPath = req.resolve(
-      `${name}/package.json`,
-      parentPath && {
-        paths: [parentPath],
-      },
-    );
+    let pkgPath: string;
+    try {
+      pkgPath = req.resolve(
+        `${name}/package.json`,
+        parentPath && {
+          paths: [parentPath],
+        },
+      );
+    } catch {
+      // We can somewhat safely ignore packages that don't export package.json,
+      // as they are likely not part of the Backstage ecosystem anyway.
+      return;
+    }
 
     const pkg = await fs.readJson(pkgPath);
     const depNames = [