Javascript json定制

你好，我正在try 操作一个JSON文件到下面的格式.我想不出该怎么办？

我的思维方式效率不高，这就是我需要帮助的原因吗？

有什么简单的方法可以做到这一点吗？

please have a look

[
 {
    "nid": "61629",
    "title": "K02 - Kiosk Slider - EN",
    "itemsSlider": [
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "en_US"
      },
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "en_US"
      }
    ]
  },
  {
    "nid": "61629",
    "title": "K02 - Kiosk Slider - EN",
    "itemsSlider": [
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "es_MX"
      },
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "es_MX"
      }
    ]
  },
  {
    "nid": "61629",
    "title": "K02 - Kiosk Slider - EN",
    "itemsSlider": [
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "fr_FR"
      },
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "fr_FR"
      }
    ]
  },
  {
    "nid": "61629",
    "title": "K02 - Kiosk Slider - Mix",
    "itemsSlider": [
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "es_MX"
      },
      {
        "nid": "61626",
        "status": "1",
        "titleNode": "01Additional Suitcase - EN",
        "language": "en_US"
      }
    ]
  }
]

THis this the output i am expecting for: please have a look Is there any way to achive it?

{
  "es_MX": [
    {
      "nid": "61626",
      "status": "1",
      "titleNode": "01Additional Suitcase - EN",
      "language": "es_MX"
    },
    {
      "nid": "61626",
      "status": "1",
      "titleNode": "01Additional Suitcase - EN",
      "language": "es_MX"
    }
  ],
  "fr_FR": [
    {
      "nid": "61626",
      "status": "1",
      "titleNode": "01Additional Suitcase - EN",
      "language": "fr_FR"
    },
    {
      "nid": "61626",
      "status": "1",
      "titleNode": "01Additional Suitcase - EN",
      "language": "fr_FR"
    }
  ]
}