hunk.code_window:               flushTest.expected!.push({ frame: this.frame, notification: COMPLETE_NOTIFICATION });
               }
             );
           }, subscriptionFrame);
         },
       };
     }
  
hunk.labels: keep replace replace keep keep keep keep keep
hunk.after_edit:             },
             });
  
hunk.file_path: src/internal/testing/TestScheduler.ts
hunk.type: replace
file: import { of } from 'rxjs';
  import { concatAll } from 'rxjs/operators';
  
  it('should infer correctly', () => {
    const o = of(of(1, 2, 3)).pipe(concatAll()); // $ExpectType Observable<number>
  });
  
  it('should enforce types', () => {
    const o = of(1, 2, 3).pipe(concatAll()); // $ExpectError
  });
  