From 6ebc7c8719d459234983f4a171c25a83c25e1ef8 Mon Sep 17 00:00:00 2001
From: Kurt King <kurtaking@gmail.com>
Date: Tue, 29 Nov 2022 07:40:54 -0600
Subject: [PATCH] check to prevent duplicate feature flag components

Signed-off-by: Kurt King <kurtaking@gmail.com>
Signed-off-by: Kurt King <kurt.king@procore.com>
---
 packages/core-app-api/src/app/AppManager.tsx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/core-app-api/src/app/AppManager.tsx b/packages/core-app-api/src/app/AppManager.tsx
index 0ca09c0a0c..70d7bc5434 100644
--- a/packages/core-app-api/src/app/AppManager.tsx
+++ b/packages/core-app-api/src/app/AppManager.tsx
@@ -310,8 +310,14 @@ export class AppManager implements BackstageApp {
 
           // Go through the featureFlags returned from the traversal and
           // register those now the configApi has been loaded
+          const registeredFlags = featureFlagsApi.getRegisteredFlags();
           for (const name of featureFlags) {
-            featureFlagsApi.registerFlag({ name, pluginId: '' });
+            // Prevents adding duplicate feature flags
+            if (!registeredFlags.some((featureFlag) => {
+              return featureFlag.name === name
+            })) {
+              featureFlagsApi.registerFlag({ name, pluginId: '' });
+            }
           }
         }
       }, [hasConfigApi, loadedConfig, featureFlags]);