hunk.code_window:     it('should set callback function context to context of returned function', () => {
         function callback(this: any, cb: Function) {
           cb(this.datum);
         }
         const boundCallback = bindCallback(callback);
         const results: Array<string|number> = [];
         boundCallback.apply({datum: 5})
           .subscribe(
  
hunk.labels: keep keep keep keep keep replace keep keep keep keep
hunk.after_edit:       const boundCallback = bindCallback<number>(callback);
  
hunk.file_path: spec/observables/bindCallback-spec.ts
hunk.type: replace
file: .progress-bar-container {
    height: 2px;
    overflow: hidden;
    position: fixed;
    top: 0;
    width: 100vw;
    z-index: 11;
  }
  