From 3a784c71e882e9041a259baa9633993b89caf26b Mon Sep 17 00:00:00 2001
From: Michael Telatynski <7t3chguy@gmail.com>
Date: Fri, 14 Jul 2023 11:50:52 +0100
Subject: [PATCH] Deprecate camelCase config options (#11261)

---
 src/utils/SnakedObject.ts | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/utils/SnakedObject.ts b/src/utils/SnakedObject.ts
index 1f6770c487..090faf1bde 100644
--- a/src/utils/SnakedObject.ts
+++ b/src/utils/SnakedObject.ts
@@ -25,7 +25,15 @@ export class SnakedObject<T = Record<string, any>> {
         const val = this.obj[key];
         if (val !== undefined) return val;
 
-        return this.obj[<K>(altCaseName ?? snakeToCamel(key))];
+        const fallbackKey = altCaseName ?? snakeToCamel(key);
+        const fallback = this.obj[<K>fallbackKey];
+        if (!!fallback) {
+            console.warn(`Using deprecated camelCase config ${fallbackKey}`);
+            console.warn(
+                "See https://github.com/vector-im/element-web/blob/develop/docs/config.md#-deprecation-notice",
+            );
+        }
+        return fallback;
     }
 
     // Make JSON.stringify() pretend that everything is fine