feat(config,transcriptions) add option to skip interim transcriptions

config.js

@@ -100,6 +100,9 @@ var config = {
         // Disables the auto-play behavior of *all* newly created video element.
         // This is useful when the client runs on a host with limited resources.
         // noAutoPlayVideo: false,
+
+        // Experiment: Whether to skip interim transcriptions.
+        // skipInterimTranscriptions: false,
     },
 
     // Disables moderator indicators.

react/features/base/config/configType.ts

@@ -563,6 +563,7 @@ export interface IConfig {
         mobileXmppWsThreshold?: number;
         noAutoPlayVideo?: boolean;
         p2pTestMode?: boolean;
+        skipInterimTranscriptions?: boolean;
         testMode?: boolean;
     };
     tileView?: {

react/features/subtitles/middleware.ts

@@ -141,6 +141,12 @@ function _endpointMessageReceived({ dispatch, getState }: IStore, next: Function
             return next(action);
         }
 
+        const { skipInterimTranscriptions } = state['features/base/config'].testing ?? {};
+
+        if (json.is_interim && skipInterimTranscriptions) {
+            return next(action);
+        }
+
         // We update the previous transcript message with the same
         // message ID or adds a new transcript message if it does not
         // exist in the map.