Mock.ts

mock.service.ts

export class MockService {
  getCompanyResultData(): readonly CompanyResult[] {
    return MockCompanyResult;
  }
}

component.ts

private readonly _mockService = inject(MockService);

ngOnInit(): void {
   this.data.companyResult = this._mockService.getCompanyResultData();
}

model.ts

export interface YourComponent {
  companyResult?: readonly CompanyResult[];
}

mock.ts

export const MockCompanyResult: readonly CompanyResult[] = [
  {
    companyTitle: 'Hello Online Kft.',
    taxNumberText: 'Adószám',
    taxNumber: '123456789',
  },
  {
    companyTitle: 'Hello Élelmiszeripari Kft.',
    taxNumberText: 'Adószám',
    taxNumber: '123456789',
  },
  {
    companyTitle: 'Hello Pékség',
    taxNumberText: 'Adószám',
    taxNumber: '123456789',
  },
  {
    companyTitle: 'Hello Software Kft.',
    taxNumberText: 'Adószám',
    taxNumber: '123456789',
  },
];