angular jest test fails when using js object from shared library

I have an angular 18 app in a NX workspace and I am trying to run a test in isolation. But I am getting an error:

 FAIL   shared-ui  libs/web/shared/ui/src/lib/shared-ui/form-controls/exercise-selector-input/data-access/exercise-input.service.spec.ts
  ● Test suite failed to run
    ReferenceError: fetch is not defined
 .....
  at Object.<anonymous> (src/lib/shared-ui/form-controls/exercise-selector-input/data-access/exercise-input.service.spec.ts:4:1)
 Test Suites: 1 failed, 1 total
 Tests:       0 total

The line referenced is the import line FormatOptionData

I am using the following command to run jus the single file in question:

nx run shared-ui:test --testFile=exercise-input.service.spec.ts

Here is my test file simplified:

    import { TestBed } from '@angular/core/testing';
    
    import { ExerciseInputService } from './exercise-input.service';
    import { Format, FormatOptionData } from '@t3a/shared-data-access';
    
    describe('ExerciseRecordService', () => {
      let service: ExerciseInputService;
      const format: Format[] = FormatOptionData;
    
      beforeEach(() => {
        TestBed.configureTestingModule({});
        service = TestBed.inject(ExerciseInputService);
      });
      
      // tests go here

    });

I know the error occurs on the FormatDataOptions assignemnt because if that is the ONLY thing I remove then there is no error.

FormatDataOptions is a js object that is imported from another shared lib inside the NX workspace. It looks like this:

export const FormatOptionData: Format[] = [
  {
    dataType: DataTypeListEnum.Enum.format,
    name: "Sets x Reps",
    code: "NSETS_XREPS",
    description: "A number of sets of reps",
    useValue: true,
    valueType: FormatValueTypeEnum.enum.set_reps,
    valueLabel: "Sets",
    prefixValue: false,
    public: true,
  },
  {
    dataType: DataTypeListEnum.Enum.format,
    name: "Rep Max",
    code: "NRM",
    description: "Maximum weight for a specific number of reps",
    useValue: true,
    valueType: FormatValueTypeEnum.enum.number,
    valueLabel: "Reps",
    prefixValue: true,
    public: true,
  },
]

I don’t want to mock this because I need to do this with multiple objects like the one above and I don’t want to maintain the data in two places

Can someone help me import this JavaScript object into my angular test

thanks