Unable to remove entries in array

[ilteoood]

Hi @rubeniskov ,
I'm trying to remove entries inside an array, using nested and test options.

You can test the issue using the following snippet:

test('should remove entries in array', (t) => {
  const initialObject = [{
    test: 1
  }, {
    test: 2
  }, {
    test: 3
  }]

  const expected = [{
    test: 2
  }]

  const actual = mutateJson(initialObject, (mutate, value) => {
    if (value.test % 2 !== 0) {
      console.log(value)
      mutate({ op: 'remove', value: {test: value} });
    }
  }, {
    nested: true,
    promises: false,
    test: ([, value]) => value.test,
  });

  t.deepEqual(actual, expected);
});

Executing this, I've the following error:

Error {
message: 'Remove operation must point to an existing value!',
}

It seems that the lastSegment is not updated on remove operation, so it continues to point to an element that doesn't exist.

[rubeniskov]

When remove op, the value must be undefined due is not taken by the logic of removing elements. Probably the error that should be raised would be the "incorrect use of the arguments".

mutant-json/test.js

Lines 194 to 208 in 9a7f13c

	test('should remove entries with value 1', (t) => {
	const expected = {
	a: 0,
	c: 2,
	};
	const actual = mutateJson(oneDepthObject, (mutate, value) => {
	if (value === 1) {
	mutate({ op: 'remove' });
	}
	});
	t.deepEqual(actual, expected);
	});

[ilteoood]

Even with undefined value, I have the same problem