Update omits empty object

[suevalov]

I have the following situation:

const store = {
   widgets: {
     1: { ... },
     2: { ... }
   }
}

Each widget has the following structure:

const widget = {
   id: number,
   title: string,
   displayParameters: Object
   ...
}

Sometimes displayParameters object may be empty.

So, the problem is that if displayParameters is an empty object, it disappears after updeep.

const newWidget = {
   id: 123,
   title: 'new one',
   displayParameters: {}
};
store = updeep({
  widgets: {
    [newWidget.id]: newWidget
  }
}, store)

/*
store: {
 widgets: {
   ...
   123: {
     id: 123,
     title: 'new one' 
   }
  }
}
*/

I have checked this issue and wrote the test - the same result. Not sure if it's correct behaviour.

it('it should not omit empty object', () => {
    const store = {
      widgets: {
        1: {
          title: '123',
          displayParams: {
            index: 1
          }
        }
      }
    };

    const result = u({
      widgets: {
        123: {
          title: 'new widget',
          displayParams: {}
        }
      }
    }, store);

    expect(result).toEqual({
      widgets: {
        1: {
          title: '123',
          displayParams: {
            index: 1
          }
        },
        123: {
          title: 'new widget',
          displayParams: {}  // test is failed here
        }
      }
    });
  });

[aaronjensen]

Thanks for the report and the test. This is fixed in 0.7.1. The behavior was actually intentional, but it's overly pedantic and surprising, I think.

[suevalov]

Wow, it was quick. Thanks!