hunk.code_window:         observer.error(err);
         }
         const subscription = self.subscribe(
           (x) => {
             try {
               if (messageFilter(x)) {
                 observer.next(x);
               }
  
hunk.labels: keep keep keep replace replace keep keep keep keep
hunk.after_edit:       const subscription = self.subscribe({
           next: (x) => {
  
hunk.file_path: src/internal/observable/dom/WebSocketSubject.ts
hunk.type: replace