mock.ts

function createMock<T>(mock: Partial<jest.Mocked<T> | T> = {}) {
  const props: any = {};
  const p: any = new Proxy({}, {
    get(_target, prop) {
      if (prop in mock) return (mock as any)[prop];
      if (prop in props) return props[prop];
      if (prop === Symbol.iterator) return undefined;
      if (prop === 'then') return undefined;
      if (prop === '_isMockFunction') return false;
      const fn: any = jest.fn(() => createMock());
      props[prop] = fn;
      return fn;
    },

    set(_target, prop, value) {
      props[prop] = value;
      return true;
    },
  });

  return p as jest.Mocked<T>;
}