text: const { clean } = require('../lib/clean');
  
  it('removes empty values', async () => {
    const src = {
      a: null,
      b: '',
      c: undefined,
      d: {},
      e: [],
      f: 'hello',
  
      nested: { will: { be: { removed: {} } } },
    };
  
    const result = clean(src);
  
    expect(result).toEqual({
      f: 'hello',
    });
  });
  