It is possible to detect the usage of {} in JS code with test framework Jasmine by spying on a certain internal JS method / property?

For example:

describe('tests', () => {
  it('test1', async () => {
    const spy = spyOn(Object, '???').and.callThrough();
    const x = {};
    expect(spy).toHaveBeenCalled();
  });
  it('test2', async () => {
    const spy = spyOn(Object, '???').and.callThrough();
    const x = null || {};
    expect(spy).toHaveBeenCalled();
  });
});

The spy should only be called when creating an object with {}, not when creating it with Object.create(null). So it may be something related to inheritance from the global JS object prototype that could help.