根据属性组合数组中的项目并维护引用

Question

我有一系列要创建时间表的项目。 如果两个或两个以上的项目在x轴上靠在一起（使用'x'值'），则我想将它们合并。

1. 遍历数组并比较'x'属性。如果它们靠在一起，则将其推入两个项目的“实例”字段中。

2. 更改两个项目的日期以使用第一个项目的日期。

3. 将原始日期保留在名为“ idDate”的字段中
4. 如果一个项目被认为与另一个项目很接近，请确保该项目尚未合并。如果有的话，请使用与之合并的项目的'x'属性。
5. 在代码中，我创建了一个名为'desiredArray'的数组，以显示我希望输出的内容

我当前的代码将关闭项推入第一个关闭项的“实例”数组中，但不维护该数组中的其他项。我也想不出怎么做日期部分。任何帮助表示赞赏。

const array = [{
    "date": "2017-03-04T13:30:00Z",
    "id": "7",
    "x": "-448.056888554414",
    "instances": [{
      "date": "2017-03-04T13:30:00Z",
      "id": "7",
      "x": "-448.056888554414"
    }]
  },
  {
    "date": "2017-08-13T13:30:00Z",
    "id": "11",
    "x": "25.521193637366817",
    "instances": [{
      "date": "2017-08-13T13:30:00Z",
      "id": "11",
      "x": "25.521193637366817"
    }]
  },
  {
    "date": "2017-08-15T13:30:00Z",
    "id": "12",
    "x": "31.296536103120246",
    "instances": [{
      "date": "2017-08-15T13:30:00Z",
      "id": "12",
      "x": "31.296536103120246"
    }]
  },
  {
    "date": "2017-08-20T13:30:00Z",
    "id": "13",
    "x": "39.95954980175038",
    "instances": [{
      "date": "2017-08-20T13:30:00Z",
      "id": "13",
      "x": "39.95954980175038"
    }]
  }
];

const newArray = [];
newArray.push({
  "date": "2018-08-06T13:30:00Z",
  "id": "14",
  "x": "639.95954980175038",
  "instances": [{
    "date": "2018-08-06T13:30:00Z",
    "id": "14",
    "x": "1054"
  }]
});

array.reverse().forEach((current: any) => {
  const last = newArray[newArray.length - 1];
  if (last.x - current.x < 40) {
    last.instances.push(current.instances[0]);
  } else {
    newArray.push(current);
  }
});

console.log(newArray);


// this is what I'm trying to create
const desiredArray = [{
    "date": "2018-08-06T13:30:00Z",
    "id": "14",
    "x": "639.95954980175038",
    "instances": [{
      "date": "2018-08-06T13:30:00Z",
      "id": "14",
      "x": "1054"
    }]
  },
  {
    "date": "2017-08-20T13:30:00Z",
    "idDate": "2017-08-20T13:30:00Z",
    "id": "13",
    "x": "39.95954980175038",
    "instances": [{
        "date": "2017-08-13T13:30:00Z",
        "id": "11",
        "x": "25.521193637366817"
      },
      {
        "date": "2017-08-15T13:30:00Z",
        "id": "12",
        "x": "31.296536103120246"
      },
      {
        "date": "2017-08-20T13:30:00Z",
        "id": "13",
        "x": "39.95954980175038"
      }
    ]
  },
  {
    "date": "2017-08-20T13:30:00Z",
    "idDate": "2017-08-15T13:30:00Z",
    "id": "12",
    "x": "31.296536103120246",
    "instances": [{
        "date": "2017-08-13T13:30:00Z",
        "id": "11",
        "x": "25.521193637366817"
      },
      {
        "date": "2017-08-15T13:30:00Z",
        "id": "12",
        "x": "31.296536103120246"
      },
      {
        "date": "2017-08-20T13:30:00Z",
        "id": "13",
        "x": "39.95954980175038"
      }
    ]
  },
  {
    "date": "2017-08-20T13:30:00Z",
    "idDate": "2017-08-13T13:30:00Z",
    "id": "11",
    "x": "25.521193637366817",
    "instances": [{
        "date": "2017-08-13T13:30:00Z",
        "id": "11",
        "x": "25.521193637366817"
      },
      {
        "date": "2017-08-15T13:30:00Z",
        "id": "12",
        "x": "31.296536103120246"
      },
      {
        "date": "2017-08-20T13:30:00Z",
        "id": "13",
        "x": "39.95954980175038"
      }
    ]
  },
  {
    "date": "2017-03-04T13:30:00Z",
    "idDate": "2017-03-04T13:30:00Z",
    "id": "7",
    "x": "-448.056888554414",
    "instances": [{
      "date": "2017-03-04T13:30:00Z",
      "id": "7",
      "x": "448.056888554414"
    }]
  }
]