From 29f2602ff9c3c9a9999c54a6004c99d6fd15ebc3 Mon Sep 17 00:00:00 2001
From: Alex Hunt <alexeh@meta.com>
Date: Thu, 29 Jun 2023 08:51:14 -0700
Subject: [PATCH] Add global hook to assert that base Metro config is called
 (#38126)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/38126

Towards https://github.com/react-native-community/cli/issues/1987. Will be paired with a CLI PR targeting React Native 0.72.1.

Changelog: None

Reviewed By: motiz88

Differential Revision: D47125080

fbshipit-source-id: b3b9d93ba747240f5168021ccb793ffe5d34251d
---
 packages/metro-config/index.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/packages/metro-config/index.js b/packages/metro-config/index.js
index c43b46a34b8cf9..091b7006e14cd7 100644
--- a/packages/metro-config/index.js
+++ b/packages/metro-config/index.js
@@ -77,6 +77,9 @@ function getDefaultConfig(
     watchFolders: [],
   };
 
+  // Set global hook so that the CLI can detect when this config has been loaded
+  global.__REACT_NATIVE_METRO_CONFIG_LOADED = true;
+
   return mergeConfig(
     getBaseConfig.getDefaultValues(projectRoot),
     config,