feature flag

config.js

         // shard: "shard1",
         // region: "europe",
         // userRegion: "asia"
-    }
+    },
 
     // Options related to end-to-end (participant to participant) ping.
     // e2eping: {
      nick
      startBitrate
      */
+
+    localRecording: {
+        enabled: true,
+        format: 'flac'
+    }
 };
 
 /* eslint-enable no-unused-vars, no-var */

react/features/local-recording/middleware.js

 import { recordingController } from './controller';
 
 declare var APP: Object;
+declare var config: Object;
 
-MiddlewareRegistry.register(({ getState, dispatch }) => next => action => {
+const isFeatureEnabled = config.localRecording
+    && config.localRecording.enabled === true;
+
+isFeatureEnabled
+&& MiddlewareRegistry.register(({ getState, dispatch }) => next => action => {
     const result = next(action);
 
     switch (action.type) {