SAP Spartacus CmsService.Components数据结构

export class CmsService {
  private components: {
    [uid: string]: {
      [pageContext: string]: Observable<CmsComponent>;
    };
  } = {};

interface Jerry {
  [uid: string]: {
    [pageContext: string]: Observable<number[]>;
  };
}

 let testdata: Jerry = {};
    testdata.uid1 = {};
    const bulk1 = {
      contentPage: of([1, 2, 3])
    };

    const bulk2 = {
      footerPage: of([4, 5, 6])
    };

    const bulk3 = {
      HeaderPage: of([7, 8, 9])
    };
    testdata.uid1 = { ...bulk1, ... bulk2};
    testdata.uid2 = bulk3 ;

    // how to copy bulk3 of uid2 to uid1??
    testdata.uid1.HeaderPage = bulk3.HeaderPage;
    Object.assign(testdata.uid2, bulk1)
    console.log('data: ' + testdata);